the game was really good until I realized you could cheat. they need to stop turning the numbers grey went they are correct. you can just switch ones around until they are right.
almost any deck can win. I made 1 deck, didn't put much thought into won all the challenges. Only problem was gridlock froze on me a couple time. The game is fine, but the AI is too easy. It doesn't clue in at all if you try to run it out of cards.
Beat level 40 in Sandbox, but with far more then you could ever have in the game. 4 maxed lazer towers, maxed shield tower, 2 maxed missle towers, old glory maxed, 2000 gunmen and 1500 repair. only won because of the repair. I took a ton of damage, but it was going back up as fast as it happended. I am sure there is no way to beat it in campaign mode.