This happens to me all the time. Some games it's not a big deal, but complex games kill me when I try to come back to them. I hadn't played No Man's Sky in about 18 months and went back in for the Frontiers update and spent half my time thinking things like, "There was a way to do a different scan. How did I do that? Wait, didn't I have a portable refinery? How do I access that? Didn't I have a gun? Pretty sure I had one somewhere."
Sometimes it even keeps me from going back to games, just the idea of having to relearn systems. Of course, sometimes I start playing a game again and learn new things that I didn't know the first time.
Sometimes it even keeps me from going back to games, just the idea of having to relearn systems. Of course, sometimes I start playing a game again and learn new things that I didn't know the first time.