Yeah, its a mod by Tamperung and his team that adds and changes a lot of stuff, they're doing what Fek isn't, which is actually developing the game at a good pace. (seriously, the last build was around 10 months ago, i understand that he's trying to make multiplayer but couldn't he probably hire someone that could help him with that? he earns like 20k each month, pretty sure hiring someone couldn't hurt) If you need the download link for the version compatible with the mod, I quoted it not too long ago.