diff --git a/index.js b/index.js
index f0ffbf8..3f03041 100644
--- a/index.js
+++ b/index.js
@@ -5,6 +5,7 @@ const chalk = require('chalk');
 
 const declarationsPath = path.resolve(__dirname, './isaac-typescript-definitions/typings/');
 const outPath = path.resolve(__dirname, './out/');
+const overridePath = path.resolve(__dirname, './override/');
 
 let classes = {};
 
@@ -218,6 +219,17 @@ async function recursiveReaddir(rpath, p, fileNames) {
     const filePath = path.resolve(declarationsPath, f);
 
     console.log(` ${chalk.cyanBright(f)}`);
+
+    const override = path.resolve(overridePath, f.replace('.d.ts', '.lua'));
+    const luaFilename = f.replace('.d.ts', '.lua').split('/').join('_');
+    try {
+      if (await fs.stat(override)) {
+        console.log('  file exists in override/, ignoring');
+        await fs.copyFile(override, path.resolve(outPath, luaFilename));
+        continue;
+      }
+    } catch(err) {}
+
     const file = await fs.readFile(filePath, 'utf8');
 
     let startParse = Date.now();
@@ -267,7 +279,6 @@ async function recursiveReaddir(rpath, p, fileNames) {
     }
 
     //console.log(inspect(parsed, false, 10));
-    const luaFilename = f.replace('.d.ts', '.lua').split('/').pop(); 
     await fs.writeFile(path.resolve(outPath, luaFilename), transpiled);
     //console.log(`  wrote ${chalk.cyanBright(luaFilename)}`);
   }
diff --git a/override/Mod.lua b/override/Mod.lua
new file mode 100644
index 0000000..66bba89
--- /dev/null
+++ b/override/Mod.lua
@@ -0,0 +1,21 @@
+---@class Mod
+---@field Name string
+__class_Mod = {}
+
+---@param modCallback ModCallbacks
+---@param callback fun(): void
+---@vararg any
+---@return void
+function __class_Mod:AddCallback(modCallback, callback, ...) end
+---@return boolean
+function __class_Mod:HasData() end
+---@return string
+function __class_Mod:LoadData() end
+---@param callbackID ModCallbacks
+---@param callback fun(): void
+---@return void
+function __class_Mod:RemoveCallback(callbackID, callback) end
+---@return void
+function __class_Mod:RemoveData() end
+---@param data string
+function __class_Mod:SaveData(data) end
\ No newline at end of file