What's a good iOS game for when I just want to zone out and do some simple stunts, nothing too crazy?

Okay, so after a brutal 12-hour shift at the clinic, my brain's basically mush. I just need something simple, y'know? "Wheelie Life 3" actually hits the spot. It's all about doing wheelies on bikes and stuff, and while it sounds kinda dumb, it's weirdly relaxing. The graphics aren't mind-blowing or anything, but the controls are easy to pick up, which is a HUGE plus when I'm running on fumes. I've been playing it for a few weeks now, and it's actually reliable – hasn't crashed once, which is more than I can say for some of the 'brain training' apps I've tried. It's a no-fuss approach to mobile gaming that actually works when you need it. Plus, you can customize your rider which is a fun little bonus.