Updated 2026-05-13
Active Codes Tracker
Live UTDX codes — every entry rated by confidence with redeem screenshots.
Latest guides & tests
Universal Tower Defense X guides, written by a real person
Hand-written UTDX guides for Roblox — codes, full unit roster, best builds, wave-by-wave strategy, reroll planning, and map tier list. Tested across Wave 50+ runs.
Updated 2026-05-13
Full Units List
Every unit — DPS, cost, role, and which waves each one carries.
Updated 2026-05-13
Best Builds Guide
Tested team compositions from Wave 1 to Wave 100, with placement notes.
Updated 2026-05-13
Wave Strategy Guide
Wave-by-wave plan — when to summon, when to upgrade, when to reroll.
Updated 2026-05-13
Reroll Strategy
Reroll codes, expected pulls, and the math behind chasing Mythic units.
Updated 2026-05-13
Map Tier List
S/A/B tiered maps with the routes and choke points that survive late waves.
Updated 2026-05-13
UTDX Wiki
Full reference — units, maps, mechanics, and game data.
Updated 2026-05-13
Beginner Strategy
First 10 waves — unit priority, money management, and the trap to avoid.
How these guides are written
I am Jim Liu, an independent publisher based in Sydney. Every value on these pages is either tested in-game or labeled as needing verification rather than presented as fact. Corrections welcome — especially screenshots, video, or patch-note evidence.