Little reward for extended play

While a very interesting and fun take on the tower defence genre, it is massively lacking in content, where unlockables for towers are almost always inefficient and unenjoyable to use. Furthermore, only 7 levels exist, where after completing them on given difficulties you can no longer reliably generate income needed to buy support gear or updgrades to towers

Ezgarax about SAS: Zombie Assault TD, v1.1