As the title states, this is a pretty nice game. The controls are easy too handle, the functions are pretty good explained - but it is definitely missing upgrades.
why a 7?
well, easy concept with really good quality, all i need is upgrades to make me play this more than twice...
It get's bored really fast..
but that's all it is, an ad. You're advertising a free iPhone game that doesn't seem to have the one feature that make these types of games enjoyable (upgrades). The graphics are great and the controls work but it just isn't fun.