Friend Bonus (+5% Each)
Each friend in your server adds +5% cash to every kill. With a full 8-player lobby that is +35% on top of your base earnings.
Invite friends before grinding — the bonus applies to the entire session.
Fastest Way to Earn Cash in Slap a Zombie
5 min read Intermediate
Quick answer
Play on Arena map with 7 friends (+35% cash), use a high-knockback glove, complete contracts, and consider the 2x Cash gamepass.