Merge Tower Defense Codes (August 2026)

Merge Tower Defense drops players into a zombie-infested map where survival depends on merging turrets, managing energy production, and upgrading your defenses fast enough to outpace each new wave. Codes hand out free Diamonds and Gems that let you skip some of the early grind and put stronger turrets on the field sooner.

Working Merge Tower Defense codes

Each code below can be redeemed for Diamonds, Gems, or a mix of rewards, and every one of them is confirmed to work right now.

CHESTS — Free rewards NEW
DAMAGERAID — Free rewards NEW
VOIDAWAKENING — 1,000 Gems NEW
SAFEGUARDPROTOCOL — 500 Gems NEW
dude — Diamonds
arcane — Diamonds
MTD1K — 1,000 Diamonds
TY20M — 1,000 Diamonds
Biotrix — 500 Diamonds
HellGuard — 500 Diamonds
Genesis — 1,000 Diamonds
Corruptor — 500 Diamonds
Aegis — 500 Diamonds
Happy Halloween — 1,000 Diamonds
UPD6.0 — 1,000 Diamonds
Welcome — 500 Diamonds
DiscordMembers — 1,000 Diamonds

Codes are case-sensitive, so type them exactly as shown or copy them directly to avoid a failed redemption.

How to redeem codes in Merge Tower Defense

Launch Merge Tower Defense on Roblox and wait for the main map to load.

Look at the upper-right corner of the screen and click the small ABX button. This opens the code redemption window.

Paste or carefully type one of the working codes from the list above into the Redeem a Code field.

Redeem a Code field in Merge Tower Defense

Click the purple Redeem button. A successful redemption adds the Diamonds or Gems straight to your in-game balance, visible in the currency counter at the top of the screen.

Expired Merge Tower Defense codes

No codes have expired right now, so every code listed above can still be claimed.

Where new codes get announced

New codes tend to arrive alongside game updates, community milestones, and seasonal events. The official Merge Tower Defense Discord server is where the developers post them first, and the game’s Merge Empire community page on Roblox also carries announcements tied to updates.

Diamonds and Gems from these codes go furthest when spent on merging turrets into stronger tiers rather than buying one-off units, since a fully merged sentry line handles late-wave zombies far better than a scattered mix of low-level turrets.