Sorry, I dont come here often. I get that you are really passionate about it. Havent played alien isolation but I hear its a pretty good game, with what seems to be a very complex AI. Again, not trying to dissuade you from doing whatever feels fun for you, but I have seen a few projects in the AvP universe get started and never finished (mostly in the Doom3/IDTech4 world, which was an ideal engine for it), because they are really complex characters to recreate in game, thats all. So its good to hear you are also working on another project that is about exploration, because thats much more feasible for someone creating a game from scratch - a place to explore, some scripted scenes, you and the world around you. You dont need to think of AI scripting, hit boxes, weapon coding, npcs navigation, characters models and their respective animations, etc… These things take years to understand, and hundreds of hours to produce. Anyway, have fun and good luck.