It is a simple concept, you are a spaceship shooting asteroids which leave behind precious metal for you to collect. You then sell this metal giving you money to upgrade your ship and advance further into space.
Along the way you meat many characters who give you specific missions to complete which reward you with rare weapons or alien technology.
It is an simple experience giving you between 5 to 7 hours of gameplay. Control is via the on-screen joystick with buttons on the right to fire your weapons & control your speed.
The last boss is slightly difficult & had me stuck for a while but once I had figured out a strategy was easy enough to take down.
There is a new game+ option which I understand make the game more difficult but I did not tackle that because I was already onto playing my next iOS game Guardian Saga