All Universal Tower Defense codes for December 2025: Gems and Trait Rerolls

Universal Tower Defense codes will unlock Gems and Trait Rerolls much faster than you'd do so in-game, letting you focus on actually playing rather than grinding. Since you need Gems to unlock new units to take to battle, getting them as quickly as possible will help you breeze through combat, and with Trait Rerolls, you'll be able to equip your units with powerful and useful perks too which is bound to make any fights that little bit easier.

All active Universal Tower Defense codes

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