#upgrades
2 articlesguides
Build and Kill Zombies Skill Tree Planning Guide
Plan skill tree purchases around observed car problems and current in-game descriptions, without guessing undocumented bonuses.
Last updated: 9/28/2026
guides
Build and Kill Zombies Cash and Upgrade Guide
Decide what to upgrade after a zombie run using your own bottlenecks, current shop values, and a simple testing log.
Last updated: 9/28/2026