In all of the Zombie Assault games, there are Power-ups. They are activated when walked into (or clicked in SAS Zombie Assault Tower Defense).
|Smart Bomb||A green-colored rocket that kills all Zombies on-screen.|
|Max Ammo||Refills all of the ammo for the player's gun.|
|Double Cash||Doubles the cash that you receive from Zombie kills for 30 seconds.|
|Holy Hand Grenade||A yellow, special grenade that kills a large number of zombies (in SAS: Zombie Assault 2 and SAS: Zombie Assault 2 Insane Asylum), and all smaller zombies in SAS: Zombie Assault 3.|
|RAGE %#@!&#||An insane-looking eyeball that causes the player to enter a rage.|
|Grenade||A grenade, which comes in packs of eight or twelve, that can be thrown to kill groups of Zombies.|
|Double Damage||Doubles the damage you deal.|
|Cryo Grenade||Just like a normal grenade, but when thrown, freezes zombies instead. They come in packs as well.|
|Crates||Crates appear in SAS: Zombie Assault 3 for power-ups. They give the player random rewards, which include Cryo Grenades, Grenades, Money, a temporary gun, or a Sentry gun. In Tower Defense, Supply Crates are periodically air dropped, which can include cash, grenades, or premium air support.|
- Main article: Pre-Mission Power-Ups
Power-ups can be bought before missions in SAS: Zombie Assault 3 and SAS: Zombie Assault 4.