Ok, so this wasn't the whole dream, but it really stands out to me
Basically, there was this game that I'm pretty sure doesn't exist. It supposedly had a German title, though since I don't know German it was probably actually just a string of letters that created a vaguely pronounceable thing. I think it started with an "m" and meant something like "beautiful world" or whatever, but like I said, don't speak German, so probably actually gibberish, and also the title makes no sense. In the dream I basically suddenly remembered it existed and apparently I really loved it as a kid and wanted to play it again. The best way I can describe it is this weird top-down (or maybe sidescrolling, I don't remember) shooter thing with a map system vaguely like Hollow Knight, except there was no real indication of where you were on the map and the point was to try to navigate anyway, which is kinda neat, I think. I think that was part of why dream me liked the game so much. Anyway the goal was to beat this thing called the "fire zombie king" or something. But then it turned into something else entirely, something like a base defense type thing I don't really know. Also there was some weird drama with the creator of the game, but that's all I remember well, so I shall end it here
Honestly even though this is really weird, I'm a little disappointed this doesn't exist, I kinda want to play the game my dream self loved so much as a kid. Oh well