Gaming on Linux is something that has always been historically valid, but until recently, there wasn't a lot that you could do. Now, with the rise of some open source projects, there are lots of games that you can play on Linux that are much more professionally made, and some of these games are supported by the community.

You can do any number of searches for games that will run on the Raspberry Pi, Banana Pi, or Linux, and you will come across lists of the best titles that you can find. They won't say which particular games you can play, but will point you to some of the software you can use to play them.