Mech Assemble: Zombie Swarm Gift Codes
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Need a quick top-up in Mech Assemble: Zombie Swarm? We've got you covered with a verified list of gift codes. Simply use the active promo codes provided below, and check back often for new redeem codes as the developers release them.
Updated May 29 — Added MGMAY555 code
Active Mech Assemble: Zombie Swarm Gift Codes
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Expired Mech Assemble: Zombie Swarm Gift Codes (Do Not Use)
The gift codes below have already passed their expiration dates or redemption limits. We keep them listed here so players can check if a code they found elsewhere is actually expired, saving you from wasting time entering dead codes.
More Games by ONEMT SGP
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Step-by-step: Mech Assemble: Zombie Swarm code redemption
- 1Launch Mech Assemble and complete the first battle stage to unlock the main menu.
- 2Tap on your Avatar/Profile icon in the top-left corner.
- 3Tap the Settings (Gear icon) button.
- 4Select the Redeem Code (or Exchange Code) button.
- 5Enter your code in the text box.
- 6Tap Confirm, and rewards will be sent to your Mailbox.
Mech Assemble: Zombie Swarm codes not working?
If you're having trouble claiming rewards, check these common issues related to Mech Assemble: Zombie Swarm codes:
- The code has expired. Many codes have a short shelf life, sometimes lasting only a day or two. If you’re seeing an error, the code may have already been deactivated. Check the status tag next to each code on our list.
- Double-check for typos. Capitalization doesn’t matter for these codes, but spelling does. Even one wrong letter or number will cause the code to fail — copying "MECH9999" from our list is the safest option.
- Already redeemed. Codes are single-use. If you’ve redeemed a code before — even months ago — it’s permanently claimed on your account and can’t be used a second time.
- Platform or region mismatch. With versions on iOS, Android, not every code works across all platforms. Double-check that the code applies to the version you’re playing.
- Check your in-game mail. In Mech Assemble: Zombie Swarm, rewards from codes like "MECH9999" are often sent to your in-game mailbox rather than appearing on screen. Check your mail, gift box, or inbox after redeeming to collect your items.
Mech Assemble: Zombie Swarm Details
Where to Play
Links to Developer Social Media
About the Game
Mech Assemble: Zombie Swarm is a roguelike action survival game published by ONEMT. In a post-apocalyptic world, players act as engineers who must construct their own custom battle mechs to fight off endless waves of mutant zombies. The game stands out for its "Modular Assembly" system, allowing you to mix and match over 100 different parts (heads, arms, legs, weapons) to create unique robots—ranging from Gundam-inspired warriors to chainsaw-wielding tanks. It combines the bullet-hell intensity of Survivor.io with the customization of a mech builder.
Developer
ONEMT SGP
Publisher
ONEMT SGP
Released
2026
- •Official Facebook
Mech Assemble: Zombie Swarm Code Release History
Mech Assemble: Zombie Swarm codes are typically added about every week. Check back here weekly to get new codes! Over time, we have tracked 13 total code releases for the game.
Mech Assemble: Zombie Swarm Code History
| Promo Code | Reward | Status | Added | Expires |
|---|---|---|---|---|
| MGMAY555 | In-game Rewards | Active | May 29, 2026 | Jun 10, 2026 |
| MGMAY333 | In-game Rewards | Expired | May 26, 2026 | Jun 2, 2026 |
| MGMAY222 | In-game Rewards | Expired | May 16, 2026 | May 31, 2026 |
| MGEAMAY111 | In-game Rewards | Expired | Apr 30, 2026 | May 11, 2026 |
| MGAPR999 | In-game Rewards | Expired | Apr 22, 2026 | Apr 30, 2026 |
| MGFEB777 | In-game Rewards | Active | Feb 13, 2026 | — |
| THX40000 | In-game Rewards | Active | Feb 13, 2026 | — |
| MGJAN888 | In-game Rewards | Active | Feb 13, 2026 | — |
| HAPPYNY2026 | In-game Rewards | Active | Feb 13, 2026 | Dec 31, 2026 |
| MGPLAY777 | 200x Diamonds | Active | Feb 13, 2026 | — |
| MECH7777 | 3x Part Chest Keys | Active | Feb 13, 2026 | — |
| MECH9999 | 177x Diamonds, 7777 Gold, 5x Mech Shards | Active | Feb 13, 2026 | — |
| MECH2025 | 77x Diamonds, 2777 Gold, 1x Part Chest Key | Expired | Feb 13, 2026 | Dec 31, 2025 |
* Table updated daily. Codes reported working by user submissions.
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Last reviewed May 29, 2026