Great game, but...

I love playing this game, but it seems like its impossible to get past wave 80 in free mode. After wave 60, some of the waves have far fewer zombies in them, and theyre the common zombies that dont give much money, which means by wave 79 or 80, you dont have enough funds to defend against the huge waves of super strong zombies it sends at you.

Violet Lightning about SAS: Zombie Assault TD