OG mods are made for old version of R3, you have to use old version of the game to install them! You can go to steam, install DX11 (on beta section) to do that. This pack contains: Jill Facehugger Invasion and 17 add ons for Jill Facehugger Invasion. It also include Standalone Head and a new model for typewriter. Instructions for patches: You can mix and match many combinations! Do not mix patches same letter. Read mod manager instructions to install patches. Some patches have different instructions.