"Good" is a subjective term, since if you don't like a particular style of game, you may not think it is "good." Also, there are few "native" games in the sense that most are cross-platform. Anyway, here are some games that are available for Linux (without the use of an emulator or translation layer like Wine): * Urban Terror * Secret Maryo Chronicles * OpenArena * SuperTux * Tremulous * Warmux You can find many other Linux games at the Linux Game Tome.