Max Upgrades (GU)

This Global Upgrade makes your In-Game upgrade level for a specific tower increase. The better the level, the more In-Game upgrades the tower can have, up to a maximum of 10. This Global Upgrade can be bought for every tower.

Levels & Costs
Level 1: Max upgrades level raised to 5

Level 2: Max upgrades level raised to 7

Level 3: Max upgrades level raised to 10