I'm not sure I'd call Rimworld "small", though I guess it is a relatively indie studio. It's a popular game with a lot of content.
For "small" games, I'd recommend also Nova Drift. It's sort of asteroids + path of exile + a slight roguelite element.
Kyber is a to-be-NIST-standardized lattice encryption scheme.
I'm not sure I'd call Rimworld "small", though I guess it is a relatively indie studio. It's a popular game with a lot of content.
For "small" games, I'd recommend also Nova Drift. It's sort of asteroids + path of exile + a slight roguelite element.