I would give five except high cost for items. Then I was on leven 149..doing great used items..was on last shot to take out plane and the game locked then crashed. I had to used tons of items the next try...according to the rediculas prices I lost about 15 dollars in items. Rediculas pricing structure then cheating programers to make me pay more. Amazing game it it could have a back option..when the dumb game makes you make mistakes at times too. So angry because I have paid good money! 😡