Great game! But way too short, some kind of endless-game would be great in any further version, but for now i think, the laser-tower is little overpowered, nearly all waves done with 2 towers, when getting enough money building an third of them and all waves are save.
Maybe an "Hard-Mode" would be great, where the spawns have +50% health and maybe +25% movement-speed.
All in all its a wonderful game, sometimes i am getting laggs for ~5 seconds, absolutely random, could not reproduce it... Maybe its some background-action of my phone, who knows

BIG THANKS for this game!!!