SAS: Zombie Assault 4 Mod Apk (Unlimited Money/Revives)

It's every man for himself in an all new special event, Virus Samples. The research corporations want virus samples from the undead and they're prepared to majorly reward whoever can bring in the most. Compete against your teammates to collect the most virus samples from defeated zombies and secure your place on the leaderboard for some big strongbox prizes!

Check the News section to find out when this exciting event is running so you can join in and get yourself some awesome gear.