You can make the goofiest and most phallic monster ever and eventually lead their species to fly through space and interact with strange, colorful planets.
Similar premise to a nature documentary.
Plenty of evolutionary biology to geek out about but it’s also casual-friendly if you’re not very savvy about that.
Random references and jokes, especially for Trekkies.
The Wii game begins in a mushroom world and the central premise is mind-altering crystals giving everyone either a good or bad high.