Defense Upgrades are one of the workshop upgrade categories in The Tower: Idle Tower Defense. They focus entirely on keeping your tower alive longer during a run.
Description
Defense Upgrades are workshop upgrades that improve your tower's ability to survive. They cover a range of effects, from raising your tower's health to reducing the damage it takes or stopping it from being destroyed outright.
These upgrades matter most when enemies start overwhelming your defenses in later waves, since raw damage output alone often isn't enough to keep a run going.