Hi Just put together a quick and dirty solution so people can start modding. Put the modpatcher.exe and the DefaultGameCore.mod in the Xcom\binaries\win32 directory When executed it will copy the original file as xcom-modded.exe Then it will patch the new settings provided by DefaulGamecore.mod into xcom-modded.exe Download 0.1 outdated If you find a bug let me know, its a dirty way but it should work for now. If you are curious feel free to decompile it, no obfuscation. Edit: Found a heavy bug, back to 0.1 i guess :/ Update: The Patcher will backup the original file as xcom-orginal.exe Then the provided mod file will be patched into the XComGame.exe This should solve the Problems with steam Patcher accepts mod file as commandline arg e.g. modpatcher test.mod will patch the provided test.mod into the binary Start the Game within steam should work now Added sample Batchfile Download 0.11 outdated Update: Download 0.12 Fixed Backup Management so it wont copy a Modified binarie over the backup Patcher will now use backup files as modbase if it find an backup Added Logging, will log to log.txt As there are many changes this version could make problems, if you encounter any please leave a message :) As requested Dropbox DL Download 0.12 Dropbox