#upgrades
2 articlesguides
Build and Kill Zombies Skill Tree and Upgrade Planning
Choose Build and Kill Zombies skill tree upgrades by reading live node descriptions and testing the car problem each purchase should solve.
Last updated: 9/28/2026
guides
Build and Kill Zombies Cash and Upgrade Guide
Learn how to spend cash and choose Build and Kill Zombies upgrades after each wave. Prioritize the weakest part of your current car.
Last updated: 9/28/2026