I love this game to bits. I have had it on all my devices. It is especially fun on the iPad due to the larger screen. It does get a bit tired when you have to upgrade the ships abilities past lvl 2.5-3 because of the massive cost of each step in the upgrade system. I had to play level 3 on insane difficulty approximately 20 times before I could get my main cannon upgraded all the way. I wish they put more abilities on sale more often. All in all great game I just cant stop playing.