If you love arcade-styled retro racing games, Wild Horse Racing looks like it could be good fun and there's a demo available with Linux support.

Don't let the name put you off at all, this is not some cutesy horse game. Here it's quite a challenge where timing is everything. You have to master control patterns from easy to godlike difficulty, leap over big jumps, and race through vibrant tracks while managing your horse. Some fun game mechanics included with each track having its own control pattern, and nailing the timing gives you a speed boost.

The horse hoof upgrade system sounds interesting to spice things up a little too, like picking and upgrading your tyres in a car racing game. As here mud and gravel build up during races to slow you to, so you have to manage that.