Clustertruck is pretty much what it says on the tin, truck parkour with suicidal AI drivers, and it's a blast. It can take quite a while to get the hang of the movement scheme, but once you do you'll be flying through the levels. There are a handful of upgrades you can unlock, although they don't really change the gameplay much; I played through almost the whole thing using only double-jump. Overall a really fun experience, but let down by the final boss, which is mind-numbingly hard.