Modded Minecraft is the nest, Ice and Fire is a really fun mod, idk if thats the one where you can tame and ride the dragons as a mount but its fun. If you have a lot of time, and kinda get an itch scratched from factories, Project Ozone 3 is a crazy huge modpack that is really fun
And just to actually add something:
Halo Masterchief Collection,
Friends vs Friends (you actually do need friends for this one its kinda dead but fun as hell),
Unreal Tournament 2004 (large private server scene),
Any entry in the Quake series really.
Lmao shoot your own foot I guess. People will buy 3rd party instead of official when the prices get too high. It was already nearly as much as a AAA title to get a single controller.
Gridworld - a simulation game made up of a grid, as the name suggests. You can control the size of the grid, and what spawns in it. The core of the game are these tiny creatures that each take up 1 square. They have varying nodes on them that represent traits and abilities. Under the hood the game says these have to be “wired” correctly by the neural network to make a creature act right. So basically you let this thing run for hours and eventually get little square creatures that eat plants and maybe each other to live.