diff --git a/cmhook/config.c b/cmhook/config.c
index fd9186c..4c0a808 100644
--- a/cmhook/config.c
+++ b/cmhook/config.c
@@ -40,4 +40,5 @@ void cm_hook_config_load(
     vfd_config_load(&cfg->vfd, filename);
     touch_screen_config_load(&cfg->touch, filename);
     cm_dll_config_load(&cfg->dll, filename);
+    unity_config_load(&cfg->unity, filename);
 }
diff --git a/cmhook/config.h b/cmhook/config.h
index cf39c70..a840358 100644
--- a/cmhook/config.h
+++ b/cmhook/config.h
@@ -11,6 +11,8 @@
 
 #include "platform/config.h"
 
+#include "unityhook/config.h"
+
 struct cm_hook_config {
     struct platform_config platform;
     struct aime_config aime;
@@ -19,6 +21,7 @@ struct cm_hook_config {
     struct vfd_config vfd;
     struct cm_dll_config dll;
     struct touch_screen_config touch;
+    struct unity_config unity;
 };
 
 void cm_dll_config_load(
diff --git a/cmhook/dllmain.c b/cmhook/dllmain.c
index 0e12adb..687601a 100644
--- a/cmhook/dllmain.c
+++ b/cmhook/dllmain.c
@@ -16,10 +16,11 @@
 #include "cmhook/config.h"
 #include "cmhook/io4.h"
 #include "cmhook/cm-dll.h"
-#include "cmhook/unity.h"
 
 #include "platform/platform.h"
 
+#include "unityhook/hook.h"
+
 #include "util/dprintf.h"
 
 static HMODULE cm_hook_mod;
@@ -83,7 +84,7 @@ static DWORD CALLBACK cm_pre_startup(void)
        There seems to be an issue with other DLL hooks if `LoadLibraryW` is
        hooked earlier in the `cmhook` initialization. */
 
-    unity_hook_init();
+    unity_hook_init(&cm_hook_cfg.unity, cm_hook_mod);
 
     /* Initialize debug helpers */
 
diff --git a/cmhook/meson.build b/cmhook/meson.build
index 338f773..6c645c2 100644
--- a/cmhook/meson.build
+++ b/cmhook/meson.build
@@ -16,6 +16,7 @@ shared_library(
         hooklib_lib,
         cmio_lib,
         platform_lib,
+        unityhook_lib,
         util_lib,
     ],
     sources : [
@@ -26,7 +27,5 @@ shared_library(
         'io4.h',
         'cm-dll.c',
         'cm-dll.h',
-        'unity.h',
-        'unity.c',
     ],
 )
diff --git a/cmhook/unity.c b/cmhook/unity.c
deleted file mode 100644
index efefc32..0000000
--- a/cmhook/unity.c
+++ /dev/null
@@ -1,95 +0,0 @@
-#include <stdbool.h>
-
-#include <windows.h>
-
-#include "hook/table.h"
-
-#include "hooklib/dll.h"
-#include "hooklib/path.h"
-
-#include "util/dprintf.h"
-
-static void dll_hook_insert_hooks(HMODULE target);
-
-static HMODULE WINAPI my_LoadLibraryW(const wchar_t *name);
-static HMODULE (WINAPI *next_LoadLibraryW)(const wchar_t *name);
-
-static const struct hook_symbol unity_kernel32_syms[] = {
-    {
-        .name = "LoadLibraryW",
-        .patch = my_LoadLibraryW,
-        .link = (void **) &next_LoadLibraryW,
-    },
-};
-
-static const wchar_t *target_modules[] = {
-    L"mono.dll",
-    L"cri_ware_unity.dll",
-};
-static const size_t target_modules_len = _countof(target_modules);
-
-void unity_hook_init(void)
-{
-    dll_hook_insert_hooks(NULL);
-}
-
-static void dll_hook_insert_hooks(HMODULE target)
-{
-    hook_table_apply(
-            target,
-            "kernel32.dll",
-            unity_kernel32_syms,
-            _countof(unity_kernel32_syms));
-}
-
-static HMODULE WINAPI my_LoadLibraryW(const wchar_t *name)
-{
-    const wchar_t *name_end;
-    const wchar_t *target_module;
-    bool already_loaded;
-    HMODULE result;
-    size_t name_len;
-    size_t target_module_len;
-
-    if (name == NULL) {
-        SetLastError(ERROR_INVALID_PARAMETER);
-
-        return NULL;
-    }
-
-    // Check if the module is already loaded
-    already_loaded = GetModuleHandleW(name) != NULL;
-
-    // Must call the next handler so the DLL reference count is incremented
-    result = next_LoadLibraryW(name);
-
-    if (!already_loaded && result != NULL) {
-        name_len = wcslen(name);
-
-        for (size_t i = 0; i < target_modules_len; i++) {
-            target_module = target_modules[i];
-            target_module_len = wcslen(target_module);
-
-            // Check if the newly loaded library is at least the length of
-            // the name of the target module
-            if (name_len < target_module_len) {
-                continue;
-            }
-
-            name_end = &name[name_len - target_module_len];
-
-            // Check if the name of the newly loaded library is one of the
-            // modules the path hooks should be injected into
-            if (_wcsicmp(name_end, target_module) != 0) {
-                continue;
-            }
-
-            dprintf("Unity: Loaded %S\n", target_module);
-
-            dll_hook_insert_hooks(result);
-            path_hook_insert_hooks(result);
-        }
-    }
-
-    return result;
-}
diff --git a/cmhook/unity.h b/cmhook/unity.h
deleted file mode 100644
index 99c3bd9..0000000
--- a/cmhook/unity.h
+++ /dev/null
@@ -1,3 +0,0 @@
-#pragma once
-
-void unity_hook_init(void);
diff --git a/dist/cm/segatools.ini b/dist/cm/segatools.ini
index 37f5708..181c785 100644
--- a/dist/cm/segatools.ini
+++ b/dist/cm/segatools.ini
@@ -68,6 +68,11 @@ dipsw1=0
 ; Enable/Disable WinTouch emulation
 enable=0
 
+[unity]
+; Path to a .NET DLL that should run before the game. Useful for loading
+; modding frameworks such as BepInEx.
+targetAssembly=
+
 ; -----------------------------------------------------------------------------
 ; Custom IO settings
 ; -----------------------------------------------------------------------------
diff --git a/dist/mai2/segatools.ini b/dist/mai2/segatools.ini
index 3aa8758..ed8cc0a 100644
--- a/dist/mai2/segatools.ini
+++ b/dist/mai2/segatools.ini
@@ -83,6 +83,15 @@ path=
 ; Leave empty if you want to use Segatools built-in keyboard input.
 path=
 
+; -----------------------------------------------------------------------------
+; Misc. hook settings
+; -----------------------------------------------------------------------------
+
+[unity]
+; Path to a .NET DLL that should run before the game. Useful for loading
+; modding frameworks such as BepInEx.
+targetAssembly=
+
 ; -----------------------------------------------------------------------------
 ; Input settings
 ; -----------------------------------------------------------------------------
diff --git a/dist/mu3/segatools.ini b/dist/mu3/segatools.ini
index ac897df..c55cbbb 100644
--- a/dist/mu3/segatools.ini
+++ b/dist/mu3/segatools.ini
@@ -72,6 +72,11 @@ dipsw1=1
 [gfx]
 enable=1
 
+[unity]
+; Path to a .NET DLL that should run before the game. Useful for loading
+; modding frameworks such as BepInEx.
+targetAssembly=
+
 ; -----------------------------------------------------------------------------
 ; Custom IO settings
 ; -----------------------------------------------------------------------------
diff --git a/mai2hook/config.c b/mai2hook/config.c
index 86b9764..d41a1d6 100644
--- a/mai2hook/config.c
+++ b/mai2hook/config.c
@@ -39,4 +39,5 @@ void mai2_hook_config_load(
     io4_config_load(&cfg->io4, filename);
     vfd_config_load(&cfg->vfd, filename);
     mai2_dll_config_load(&cfg->dll, filename);
+    unity_config_load(&cfg->unity, filename);
 }
diff --git a/mai2hook/config.h b/mai2hook/config.h
index 2def3a7..7e86822 100644
--- a/mai2hook/config.h
+++ b/mai2hook/config.h
@@ -10,6 +10,8 @@
 
 #include "platform/config.h"
 
+#include "unityhook/config.h"
+
 struct mai2_hook_config {
     struct platform_config platform;
     struct aime_config aime;
@@ -17,6 +19,7 @@ struct mai2_hook_config {
     struct io4_config io4;
     struct vfd_config vfd;
     struct mai2_dll_config dll;
+    struct unity_config unity;
 };
 
 void mai2_dll_config_load(
diff --git a/mai2hook/dllmain.c b/mai2hook/dllmain.c
index 5d53368..1d10c60 100644
--- a/mai2hook/dllmain.c
+++ b/mai2hook/dllmain.c
@@ -12,10 +12,11 @@
 #include "mai2hook/config.h"
 #include "mai2hook/io4.h"
 #include "mai2hook/mai2-dll.h"
-#include "mai2hook/unity.h"
 
 #include "platform/platform.h"
 
+#include "unityhook/hook.h"
+
 #include "util/dprintf.h"
 
 static HMODULE mai2_hook_mod;
@@ -80,7 +81,7 @@ static DWORD CALLBACK mai2_pre_startup(void)
        There seems to be an issue with other DLL hooks if `LoadLibraryW` is
        hooked earlier in the `mai2hook` initialization. */
 
-    unity_hook_init();
+    unity_hook_init(&mai2_hook_cfg.unity, mai2_hook_mod);
 
     /* Initialize debug helpers */
 
diff --git a/mai2hook/meson.build b/mai2hook/meson.build
index 8578c51..f43fccc 100644
--- a/mai2hook/meson.build
+++ b/mai2hook/meson.build
@@ -15,6 +15,7 @@ shared_library(
         hooklib_lib,
         mai2io_lib,
         platform_lib,
+        unityhook_lib,
         util_lib,
     ],
     sources : [
@@ -25,7 +26,5 @@ shared_library(
         'io4.h',
         'mai2-dll.c',
         'mai2-dll.h',
-        'unity.h',
-        'unity.c',
     ],
 )
diff --git a/mai2hook/unity.h b/mai2hook/unity.h
deleted file mode 100644
index 99c3bd9..0000000
--- a/mai2hook/unity.h
+++ /dev/null
@@ -1,3 +0,0 @@
-#pragma once
-
-void unity_hook_init(void);
diff --git a/meson.build b/meson.build
index a0db24a..90ac292 100644
--- a/meson.build
+++ b/meson.build
@@ -42,6 +42,7 @@ shlwapi_lib = cc.find_library('shlwapi')
 dinput8_lib = cc.find_library('dinput8')
 dxguid_lib = cc.find_library('dxguid')
 xinput_lib = cc.find_library('xinput')
+pathcch_lib = cc.find_library('pathcch')
 
 inc = include_directories('.')
 capnhook = subproject('capnhook')
@@ -55,6 +56,7 @@ subdir('platform')
 subdir('util')
 
 subdir('gfxhook')
+subdir('unityhook')
 
 subdir('aimeio')
 subdir('chuniio')
diff --git a/mu3hook/config.c b/mu3hook/config.c
index bb51103..290d5ae 100644
--- a/mu3hook/config.c
+++ b/mu3hook/config.c
@@ -42,4 +42,5 @@ void mu3_hook_config_load(
     gfx_config_load(&cfg->gfx, filename);
     vfd_config_load(&cfg->vfd, filename);
     mu3_dll_config_load(&cfg->dll, filename);
+    unity_config_load(&cfg->unity, filename);
 }
diff --git a/mu3hook/config.h b/mu3hook/config.h
index f1b2cdf..930a766 100644
--- a/mu3hook/config.h
+++ b/mu3hook/config.h
@@ -13,6 +13,8 @@
 
 #include "platform/config.h"
 
+#include "unityhook/config.h"
+
 struct mu3_hook_config {
     struct platform_config platform;
     struct aime_config aime;
@@ -22,6 +24,7 @@ struct mu3_hook_config {
     // struct led15093_config led15093;
     struct vfd_config vfd;
     struct mu3_dll_config dll;
+    struct unity_config unity;
 };
 
 void mu3_dll_config_load(
diff --git a/mu3hook/dllmain.c b/mu3hook/dllmain.c
index 3f940dd..bd1ec2b 100644
--- a/mu3hook/dllmain.c
+++ b/mu3hook/dllmain.c
@@ -2,7 +2,6 @@
 
 #include <stdlib.h>
 
-#include "board/io4.h"
 #include "board/sg-reader.h"
 #include "board/vfd.h"
 
@@ -20,10 +19,12 @@
 #include "mu3hook/config.h"
 #include "mu3hook/io4.h"
 #include "mu3hook/mu3-dll.h"
-#include "mu3hook/unity.h"
 
 #include "platform/platform.h"
 
+#include "unityhook/config.h"
+#include "unityhook/hook.h"
+
 #include "util/dprintf.h"
 
 static HMODULE mu3_hook_mod;
@@ -99,7 +100,7 @@ static DWORD CALLBACK mu3_pre_startup(void)
        There seems to be an issue with other DLL hooks if `LoadLibraryW` is
        hooked earlier in the `mu3hook` initialization. */
 
-    unity_hook_init();
+    unity_hook_init(&mu3_hook_cfg.unity, mu3_hook_mod);
 
     /* Initialize debug helpers */
 
diff --git a/mu3hook/meson.build b/mu3hook/meson.build
index 27ba7f7..a722428 100644
--- a/mu3hook/meson.build
+++ b/mu3hook/meson.build
@@ -17,6 +17,7 @@ shared_library(
         hooklib_lib,
         mu3io_lib,
         platform_lib,
+        unityhook_lib,
         util_lib,
     ],
     sources : [
@@ -27,7 +28,5 @@ shared_library(
         'io4.h',
         'mu3-dll.c',
         'mu3-dll.h',
-        'unity.h',
-        'unity.c',
     ],
 )
diff --git a/mu3hook/unity.c b/mu3hook/unity.c
deleted file mode 100644
index efefc32..0000000
--- a/mu3hook/unity.c
+++ /dev/null
@@ -1,95 +0,0 @@
-#include <stdbool.h>
-
-#include <windows.h>
-
-#include "hook/table.h"
-
-#include "hooklib/dll.h"
-#include "hooklib/path.h"
-
-#include "util/dprintf.h"
-
-static void dll_hook_insert_hooks(HMODULE target);
-
-static HMODULE WINAPI my_LoadLibraryW(const wchar_t *name);
-static HMODULE (WINAPI *next_LoadLibraryW)(const wchar_t *name);
-
-static const struct hook_symbol unity_kernel32_syms[] = {
-    {
-        .name = "LoadLibraryW",
-        .patch = my_LoadLibraryW,
-        .link = (void **) &next_LoadLibraryW,
-    },
-};
-
-static const wchar_t *target_modules[] = {
-    L"mono.dll",
-    L"cri_ware_unity.dll",
-};
-static const size_t target_modules_len = _countof(target_modules);
-
-void unity_hook_init(void)
-{
-    dll_hook_insert_hooks(NULL);
-}
-
-static void dll_hook_insert_hooks(HMODULE target)
-{
-    hook_table_apply(
-            target,
-            "kernel32.dll",
-            unity_kernel32_syms,
-            _countof(unity_kernel32_syms));
-}
-
-static HMODULE WINAPI my_LoadLibraryW(const wchar_t *name)
-{
-    const wchar_t *name_end;
-    const wchar_t *target_module;
-    bool already_loaded;
-    HMODULE result;
-    size_t name_len;
-    size_t target_module_len;
-
-    if (name == NULL) {
-        SetLastError(ERROR_INVALID_PARAMETER);
-
-        return NULL;
-    }
-
-    // Check if the module is already loaded
-    already_loaded = GetModuleHandleW(name) != NULL;
-
-    // Must call the next handler so the DLL reference count is incremented
-    result = next_LoadLibraryW(name);
-
-    if (!already_loaded && result != NULL) {
-        name_len = wcslen(name);
-
-        for (size_t i = 0; i < target_modules_len; i++) {
-            target_module = target_modules[i];
-            target_module_len = wcslen(target_module);
-
-            // Check if the newly loaded library is at least the length of
-            // the name of the target module
-            if (name_len < target_module_len) {
-                continue;
-            }
-
-            name_end = &name[name_len - target_module_len];
-
-            // Check if the name of the newly loaded library is one of the
-            // modules the path hooks should be injected into
-            if (_wcsicmp(name_end, target_module) != 0) {
-                continue;
-            }
-
-            dprintf("Unity: Loaded %S\n", target_module);
-
-            dll_hook_insert_hooks(result);
-            path_hook_insert_hooks(result);
-        }
-    }
-
-    return result;
-}
diff --git a/mu3hook/unity.h b/mu3hook/unity.h
deleted file mode 100644
index 99c3bd9..0000000
--- a/mu3hook/unity.h
+++ /dev/null
@@ -1,3 +0,0 @@
-#pragma once
-
-void unity_hook_init(void);
diff --git a/unityhook/config.c b/unityhook/config.c
new file mode 100644
index 0000000..6f0a0cc
--- /dev/null
+++ b/unityhook/config.c
@@ -0,0 +1,14 @@
+#include "config.h"
+
+void unity_config_load(struct unity_config *cfg, const wchar_t *filename) {
+    cfg->enable = GetPrivateProfileIntW(L"unity", L"enable", 1, filename);
+
+    GetPrivateProfileStringW(
+        L"unity",
+        L"targetAssembly",
+        L"",
+        cfg->target_assembly,
+        _countof(cfg->target_assembly),
+        filename
+    );
+}
diff --git a/unityhook/config.h b/unityhook/config.h
new file mode 100644
index 0000000..6fca14a
--- /dev/null
+++ b/unityhook/config.h
@@ -0,0 +1,12 @@
+#pragma once
+
+#include <stdbool.h>
+
+#include <windows.h>
+
+struct unity_config {
+    bool enable;
+    wchar_t target_assembly[MAX_PATH];
+};
+
+void unity_config_load(struct unity_config *cfg, const wchar_t *filename);
diff --git a/unityhook/doorstop.c b/unityhook/doorstop.c
new file mode 100644
index 0000000..07b6799
--- /dev/null
+++ b/unityhook/doorstop.c
@@ -0,0 +1,173 @@
+// A simplified version of NeighTools' UnityDoorstop, allowing mod loaders
+// like BepInEx to be loaded into Unity games.
+//
+// SPDX-License-Identifier: CC0
+// https://github.com/NeighTools/UnityDoorstop
+#include <stdbool.h>
+
+#include <pathcch.h>
+#include <psapi.h>
+
+#include "hooklib/procaddr.h"
+#include "util/dprintf.h"
+
+#include "doorstop.h"
+#include "mono.h"
+#include "util.h"
+
+static void * my_mono_jit_init_version(const char *root_domain_name, const char *runtime_version);
+void doorstop_invoke(void *domain);
+
+static char module_name[MAX_PATH];
+static bool doorstop_hook_initted;
+static struct unity_config unity_config;
+static struct hook_symbol unity_mono_syms[] = {
+{
+        .name = "mono_jit_init_version",
+        .patch = my_mono_jit_init_version,
+    }
+};
+
+void doorstop_mono_hook_init(const struct unity_config *cfg, HINSTANCE module) {
+    if (doorstop_hook_initted || cfg->target_assembly[0] == 0) {
+        return;
+    }
+
+    GetModuleBaseNameA(GetCurrentProcess(), module, module_name, MAX_PATH);
+
+    memcpy(&unity_config, cfg, sizeof(*cfg));
+    load_mono_functions(module);
+    proc_addr_table_push(module_name, unity_mono_syms, _countof(unity_mono_syms));
+
+    doorstop_hook_initted = true;
+}
+
+static void * my_mono_jit_init_version(const char *root_domain_name, const char *runtime_version) {
+    dprintf("Unity: Starting Mono domain \"%s\"\n", root_domain_name);
+
+    SetEnvironmentVariableW(L"DOORSTOP_DLL_SEARCH_DIRS", widen(mono_assembly_getrootdir()));
+
+    void* domain = mono_jit_init_version(root_domain_name, runtime_version);
+
+    doorstop_invoke(domain);
+    return domain;
+}
+
+void doorstop_invoke(void* domain) {
+    if (GetEnvironmentVariableW(L"DOORSTOP_INITIALIZED", NULL, 0) != 0) {
+        dprintf("Unity: Doorstop is already initialized.\n");
+        return;
+    }
+
+    SetEnvironmentVariableW(L"DOORSTOP_INITIALIZED", L"TRUE");
+
+    mono_thread_set_main(mono_thread_current());
+
+    if (mono_domain_set_config) {
+#define CONFIG_EXT L".config"
+
+        wchar_t exe_path[MAX_PATH];
+        size_t exe_path_len = GetModuleFileNameW(NULL, exe_path, MAX_PATH);
+        wchar_t *folder_name = wcsdup(exe_path);
+
+        PathCchRemoveFileSpec(folder_name, exe_path_len + 1);
+
+        char *exe_path_n = narrow(exe_path);
+        char *folder_name_n = narrow(folder_name);
+
+        dprintf("Unity: Setting config paths: base dir: %s; config path: %s\n", folder_name_n, exe_path_n);
+
+        mono_domain_set_config(domain, folder_name_n, exe_path_n);
+
+        free(folder_name);
+        free(exe_path_n);
+        free(folder_name_n);
+
+#undef CONFIG_EXT
+    }
+
+    SetEnvironmentVariableW(L"DOORSTOP_INVOKE_DLL_PATH", unity_config.target_assembly);
+
+    char *assembly_dir = mono_assembly_getrootdir();
+    dprintf("Unity: Assembly directory: %s\n", assembly_dir);
+
+    SetEnvironmentVariableA("DOORSTOP_MANAGED_FOLDER_DIR", assembly_dir);
+
+    wchar_t app_path[MAX_PATH];
+    GetModuleFileNameW(NULL, app_path, MAX_PATH);
+    SetEnvironmentVariableW(L"DOORSTOP_PROCESS_PATH", app_path);
+
+    char* dll_path = narrow(unity_config.target_assembly);
+
+    dprintf("Unity: Loading assembly: %s\n", dll_path);
+
+    void* assembly = mono_domain_assembly_open(domain, dll_path);
+
+    if (!assembly) {
+        dprintf("Unity: Failed to load assembly\n");
+        free(dll_path);
+        return;
+    }
+
+    void *image = mono_assembly_get_image(assembly);
+
+    if (!image) {
+        dprintf("Unity: Assembly image doesn't exist\n");
+        free(dll_path);
+        return;
+    }
+
+    void *desc = mono_method_desc_new("*:Main", FALSE);
+    void *method = mono_method_desc_search_in_image(desc, image);
+
+    if (!method) {
+        dprintf("Unity: Assembly does not have a valid entrypoint.\n");
+        free(dll_path);
+        return;
+    }
+
+    void *signature = mono_method_signature(method);
+    UINT32 params = mono_signature_get_param_count(signature);
+    void **args = NULL;
+
+    if (params == 1) {
+        // If there is a parameter, it's most likely a string[].
+        void *args_array = mono_array_new(domain, mono_get_string_class(), 0);
+        args = malloc(sizeof(void*) * 1);
+        args[0] = args_array;
+    }
+
+    dprintf("Unity: Invoking method %p\n", method);
+
+    void *exc = NULL;
+    mono_runtime_invoke(method, NULL, args, &exc);
+
+    if (exc) {
+        dprintf("Unity: Error invoking method!\n");
+
+        void *ex_class = mono_get_exception_class();
+        void *to_string_desc = mono_method_desc_new("*:ToString()", FALSE);
+        void* to_string_method = mono_method_desc_search_in_class(to_string_desc, ex_class);
+
+        mono_method_desc_free(to_string_desc);
+
+        if (to_string_method) {
+            void* real_to_string_method = mono_object_get_virtual_method(exc, to_string_method);
+            void* exc2 = NULL;
+            void* str = mono_runtime_invoke(real_to_string_method, exc, NULL, &exc2);
+
+            if (!exc2) {
+                char* exc_str = mono_string_to_utf8(str);
+                dprintf("Unity: Error message: %s\n", exc_str);
+            }
+        }
+    }
+
+    mono_method_desc_free(desc);
+    free(dll_path);
+
+    if (args) {
+        free(args);
+        args = NULL;
+    }
+}
diff --git a/unityhook/doorstop.h b/unityhook/doorstop.h
new file mode 100644
index 0000000..8cc961e
--- /dev/null
+++ b/unityhook/doorstop.h
@@ -0,0 +1,5 @@
+#pragma once
+
+#include "config.h"
+
+void doorstop_mono_hook_init(const struct unity_config *cfg, HINSTANCE module);
\ No newline at end of file
diff --git a/mai2hook/unity.c b/unityhook/hook.c
similarity index 70%
rename from mai2hook/unity.c
rename to unityhook/hook.c
index 64195be..060233b 100644
--- a/mai2hook/unity.c
+++ b/unityhook/hook.c
@@ -1,14 +1,23 @@
+#include <assert.h>
 #include <stdbool.h>
 
-#include <windows.h>
-
 #include "hook/table.h"
-
-#include "hooklib/dll.h"
 #include "hooklib/path.h"
-
 #include "util/dprintf.h"
 
+#include "doorstop.h"
+#include "hook.h"
+
+static bool unity_hook_initted;
+static struct unity_config unity_config;
+
+static const wchar_t *target_modules[] = {
+    L"mono.dll",
+    L"mono-2.0-bdwgc.dll",
+    L"cri_ware_unity.dll",
+};
+static const size_t target_modules_len = _countof(target_modules);
+
 static void dll_hook_insert_hooks(HMODULE target);
 
 static HMODULE WINAPI my_LoadLibraryW(const wchar_t *name);
@@ -22,28 +31,33 @@ static const struct hook_symbol unity_kernel32_syms[] = {
     },
 };
 
-static const wchar_t *target_modules[] = {
-    L"mono-2.0-bdwgc.dll",
-    L"cri_ware_unity.dll",
-};
-static const size_t target_modules_len = _countof(target_modules);
+void unity_hook_init(const struct unity_config *cfg, HINSTANCE self) {
+    assert(cfg != NULL);
 
-void unity_hook_init(void)
-{
+    if (!cfg->enable) {
+        return;
+    }
+
+    if (unity_hook_initted) {
+        return;
+    }
+
+    memcpy(&unity_config, cfg, sizeof(*cfg));
     dll_hook_insert_hooks(NULL);
+
+    unity_hook_initted = true;
+    dprintf("Unity: Hook enabled.\n");
 }
 
-static void dll_hook_insert_hooks(HMODULE target)
-{
+static void dll_hook_insert_hooks(HMODULE target) {
     hook_table_apply(
-            target,
-            "kernel32.dll",
-            unity_kernel32_syms,
-            _countof(unity_kernel32_syms));
+        target,
+        "kernel32.dll",
+        unity_kernel32_syms,
+        _countof(unity_kernel32_syms));
 }
 
-static HMODULE WINAPI my_LoadLibraryW(const wchar_t *name)
-{
+static HMODULE WINAPI my_LoadLibraryW(const wchar_t *name) {
     const wchar_t *name_end;
     const wchar_t *target_module;
     bool already_loaded;
@@ -66,6 +80,11 @@ static HMODULE WINAPI my_LoadLibraryW(const wchar_t *name)
     if (!already_loaded && result != NULL) {
         name_len = wcslen(name);
 
+        // mono entrypoint for injecting target_assembly
+        if (GetProcAddress(result, "mono_jit_init_version")) {
+            doorstop_mono_hook_init(&unity_config, result);
+        }
+
         for (size_t i = 0; i < target_modules_len; i++) {
             target_module = target_modules[i];
             target_module_len = wcslen(target_module);
diff --git a/unityhook/hook.h b/unityhook/hook.h
new file mode 100644
index 0000000..684868c
--- /dev/null
+++ b/unityhook/hook.h
@@ -0,0 +1,7 @@
+#pragma once
+
+#include <windows.h>
+
+#include "config.h"
+
+void unity_hook_init(const struct unity_config *cfg, HINSTANCE self);
diff --git a/unityhook/meson.build b/unityhook/meson.build
new file mode 100644
index 0000000..9fd7a7b
--- /dev/null
+++ b/unityhook/meson.build
@@ -0,0 +1,20 @@
+unityhook_lib = static_library(
+    'unityhook',
+    include_directories: inc,
+    implicit_include_directories: false,
+    c_pch: '../precompiled.h',
+    dependencies: [
+        capnhook.get_variable('hook_dep'),
+        pathcch_lib
+    ],
+    sources: [
+        'mono.h',
+        'config.c',
+        'config.h',
+        'doorstop.c',
+        'doorstop.h',
+        'hook.c',
+        'hook.h',
+        'util.h'
+    ],
+)
diff --git a/unityhook/mono.h b/unityhook/mono.h
new file mode 100644
index 0000000..7056e75
--- /dev/null
+++ b/unityhook/mono.h
@@ -0,0 +1,100 @@
+// SPDX-License-Identifier: CC0
+// https://github.com/NeighTools/UnityDoorstop
+#pragma once
+
+#include <windows.h>
+
+// Here we define the pointers to some functions within mono.dll
+// Note to C learners: these are not signature definitions, but rather "variable"
+// definitions with the function pointer type.
+
+// Note: we use void* instead of the real intented structs defined in mono API
+// This way we don't need to include or define any of Mono's structs, which saves space
+// This, obviously, comes with a drawback of not being able to easily access the contents of the structs
+
+void * (*mono_thread_current)();
+void (*mono_thread_set_main)(void *);
+
+void *(*mono_jit_init_version)(const char *root_domain_name, const char *runtime_version);
+void *(*mono_domain_assembly_open)(void *domain, const char *name);
+void *(*mono_assembly_get_image)(void *assembly);
+void *(*mono_runtime_invoke)(void *method, void *obj, void **params, void **exc);
+
+void *(*mono_method_desc_new)(const char *name, int include_namespace);
+void* (*mono_method_desc_search_in_image)(void* desc, void* image);
+void *(*mono_method_desc_search_in_class)(void *desc, void *klass);
+void (*mono_method_desc_free)(void *desc);
+void *(*mono_method_signature)(void *method);
+UINT32 (*mono_signature_get_param_count)(void *sig);
+
+void (*mono_domain_set_config)(void *domain, char *base_dir, char *config_file_name);
+void *(*mono_array_new)(void *domain, void *eclass, uintptr_t n);
+void *(*mono_get_string_class)();
+
+char *(*mono_assembly_getrootdir)();
+
+// Additional funcs to bootstrap custom MONO
+void (*mono_set_dirs)(const char* assembly_dir, const char* config_dir);
+void (*mono_config_parse)(const char* filename);
+void (*mono_set_assemblies_path)(const char* path);
+void *(*mono_object_to_string)(void* obj, void** exc);
+char *(*mono_string_to_utf8)(void* s);
+
+void *(*mono_image_open_from_data_with_name)(void *data, DWORD data_len, int need_copy, void *status, int refonly,
+                                             const char *name);
+
+void* (*mono_get_exception_class)();
+void* (*mono_object_get_virtual_method)(void* obj_raw, void* method);
+
+void* (*mono_jit_parse_options)(int argc, const char** argv);
+
+typedef enum {
+    MONO_DEBUG_FORMAT_NONE,
+    MONO_DEBUG_FORMAT_MONO,
+    /* Deprecated, the mdb debugger is not longer supported. */
+    MONO_DEBUG_FORMAT_DEBUGGER
+} MonoDebugFormat;
+
+void* (*mono_debug_init)(MonoDebugFormat format);
+void* (*mono_debug_domain_create)(void* domain);
+
+/**
+* \brief Loads Mono C API function pointers so that the above definitions can be called.
+* \param mono_lib Mono.dll module.
+*/
+void load_mono_functions(HMODULE mono_lib) {
+    // Enjoy the fact that C allows such sloppy casting
+    // In C++ you would have to cast to the precise function pointer type
+#define GET_MONO_PROC(name) name = (void*)GetProcAddress(mono_lib, #name)
+
+    // Find and assign all our functions that we are going to use
+    GET_MONO_PROC(mono_domain_assembly_open);
+    GET_MONO_PROC(mono_assembly_get_image);
+    GET_MONO_PROC(mono_runtime_invoke);
+    GET_MONO_PROC(mono_jit_init_version);
+    GET_MONO_PROC(mono_method_desc_new);
+    GET_MONO_PROC(mono_method_desc_search_in_class);
+    GET_MONO_PROC(mono_method_desc_search_in_image);
+    GET_MONO_PROC(mono_method_desc_free);
+    GET_MONO_PROC(mono_method_signature);
+    GET_MONO_PROC(mono_signature_get_param_count);
+    GET_MONO_PROC(mono_array_new);
+    GET_MONO_PROC(mono_get_string_class);
+    GET_MONO_PROC(mono_assembly_getrootdir);
+    GET_MONO_PROC(mono_thread_current);
+    GET_MONO_PROC(mono_thread_set_main);
+    GET_MONO_PROC(mono_domain_set_config);
+    GET_MONO_PROC(mono_set_dirs);
+    GET_MONO_PROC(mono_config_parse);
+    GET_MONO_PROC(mono_set_assemblies_path);
+    GET_MONO_PROC(mono_object_to_string);
+    GET_MONO_PROC(mono_string_to_utf8);
+    GET_MONO_PROC(mono_image_open_from_data_with_name);
+    GET_MONO_PROC(mono_get_exception_class);
+    GET_MONO_PROC(mono_object_get_virtual_method);
+    GET_MONO_PROC(mono_jit_parse_options);
+    GET_MONO_PROC(mono_debug_init);
+    GET_MONO_PROC(mono_debug_domain_create);
+
+#undef GET_MONO_PROC
+}
\ No newline at end of file
diff --git a/unityhook/util.h b/unityhook/util.h
new file mode 100644
index 0000000..41def7b
--- /dev/null
+++ b/unityhook/util.h
@@ -0,0 +1,20 @@
+#pragma once
+
+#include <windows.h>
+
+wchar_t *widen(const char *str) {
+    const int reqsz = MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0);
+    wchar_t *result = malloc(reqsz * sizeof(wchar_t));
+
+    MultiByteToWideChar(CP_UTF8, 0, str, -1, result, reqsz);
+    return result;
+}
+
+char *narrow(const wchar_t *str) {
+    const int reqsz = WideCharToMultiByte(CP_UTF8, 0, str, -1, NULL, 0, NULL, NULL);
+    char *result = malloc(reqsz * sizeof(char));
+
+    WideCharToMultiByte(CP_UTF8, 0, str, -1, result, reqsz, NULL, NULL);
+    return result;
+}
+