Got this recently for the ipad2 (?6.99) but it is available for the Mac (12.99) or android.
For those who remember Elite very similar, although you can do the mission or just run free in it.
For those who didn't play Elite and are still running around with nappy rash, it is a space trading/ shooting game where you go around buying and selling goods, mining asteroids usually to get enough money up to buy bigger ships and/or guns which you may need to kill bad guys (pirates, aliens and whoever else gets in your way).
I would recommend it but then old gits like me used to sit up to all hours playing elite.
P.S. Yes I know there is a free Elite clone out for the PC called Oolite.
