How about a RimWorld crossover? I'm sure there are some people willing to mod in things like the omniframes and monters into Rimworld.
(Looking at the modded game playthrough he is running to see that Warhammer 4k, Lord of the rings, Star Wars, Mass Effect, Aliens and Predators, How to train you dragon, and Pokemon characters and races all exist on the same planet in his game along with things like cat girls and vocaloids just running around as wild animals. Not counting all the vampires, werewolves, undead, and robots. Good things robots and undead don't need to sleep otherwise my base would have been taken over by giant insectoids and mechanoid (giant robot bugs with guns) raids a long time ago.)