I refuse to play this game until there are faster speed buttons, I gave up on an endless run last night because of how slow it was going after 60 or 70 waves. Rewards should be better for endless. Also, making a no hit unit with 60 or more numbers on only the second level? You force us to replay the first level and grind on it to get new units, very sad. This game has potential.
Its locked up twice on me when the little "help" balloon appears to tell me something. Other than that good concept, and a decent game. Needs some major bug work.