Bloons was great, easy and not that hard. But I cant even beat level 1 normal because this game has the zombies a big free roaming track and the towers attack rate is really fast, but it doesnt do enough damage. Thats why swarms can get to you even if you have like 30 towers and a maze path can wreck you. I enjoy this game, but not the difficulty at normal mode.
Gorativi about SAS: Zombie Assault TD