I don't have a computer at the moment since I punched my laptop to death, so I've been playing a lot of mobile games. It's hard to find any that aren't total shit, but this one called ALONE is pretty neat and I can't stop playing it.
You need to steer your rocketship to avoid obstacles as it zooms along through what appears to be an asteroid field with the remains of spaceships and such floating about in it. The controls are simple, but also hella sensitive, and if you flick your thumb up even slightly too much you can send yourself flying into the ceiling in an instant - and as the game progresses you'll find yourself having to zip around faster and faster to be able to survive. It's visually appealing and also hard as balls; the basic difficulty is called Veteran and I haven't managed to unlock the next out of four more yet.
