Mitosis Codes — Roblox (Checked October 20, 2026)
The Roblox game Mitosis lists two codes in its official description after the October 20, 2026 Halloween update: Update2 and HALLOWEEN. Redeem them in the Shop → Codes tab. The developer hasn't published their rewards yet; earlier codes gave Wheel Spins, a Gold Rush and Tokens. Two older codes, Update1 (3 Wheel Spins + Gold Rush) and 20K (20 Tokens + 1 Level), are still listed by code sites but were dropped from the game's description, so they may have expired.
Mitosis codes (checked 2026-10-20)
| Code | Reward | Status |
|---|---|---|
Update2 |
Not published yet (shown when you redeem) | In the official game description since the October 20, 2026 update |
HALLOWEEN |
Not published yet (shown when you redeem) | In the official game description since the October 20, 2026 update |
Update1 |
3 Wheel Spins + Gold Rush | Listed by several code sites; no longer in the game description, so it may have expired |
20K |
20 Tokens + 1 Level | Listed by several code sites since October 18; not in the game description, so it may have expired |
Codes are case-sensitive: type Update2 with a capital U and HALLOWEEN in capitals. Each code works once per account.
How to redeem Mitosis codes
- Open Mitosis on Roblox.
- Tap the Shop button.
- Open the Codes tab in the shop.
- Type or paste a code and press Redeem. The reward shows up right away.
Code not working? Check capitals and spaces, then rejoin: new codes from an update can fail on servers that started before it. If it still fails, the code has most likely expired.
What codes give you
The game's own description says to "Redeem codes in the shop for free rewards". So far codes have given Wheel Spins (spins on the reward wheel), a Gold Rush (a temporary cash boost) and Tokens, the rebirth currency you spend on the skill tree. We'll add the rewards for Update2 and HALLOWEEN once they're confirmed.
About Mitosis
Mitosis is a Roblox incremental game by Fauna Studio, released on September 30, 2026. From the official description:
- Split your cells to progress, then sell them for Cash and buy upgrades.
- Discover 28 mutations and fuse them into mixes.
- Rebirth for Tokens and unlock a large skill tree.
- Beat challenges and bosses and collect cards.
- Survive events such as Gold Rushes, Blood Moons and Meteor Showers.
Servers hold up to 10 players. On October 20, 2026 the game had about 840,000 visits and 8,600 favorites, with around 1,300 people playing at once.
Mitosis game passes (Robux)
| Game pass | Price |
|---|---|
| Extra Card Slot | 99 |
| 2X Mutation Luck | 249 |
| 2X Split Speed | 249 |
| 2X Rebirth Tokens | 249 |
| 2X Money | 299 |
| VIP Bundle | 299 |
Prices are from the game's Roblox store page on October 20, 2026. Sell effects, hats and the Starter Pack are listed there too but weren't on sale.
When new codes come out
So far codes have arrived with updates (Update1, Update2), events (HALLOWEEN) and visit milestones (20K). Fauna Studio puts the current codes in the game description, so that's the first place to check after an update. We check it every day.
Changelog
- October 20, 2026: page published.
Update2andHALLOWEENare in the official description;Update1and20Kwere removed from it.
Frequently asked questions
What are the Mitosis codes on Roblox?
After the October 20, 2026 Halloween update, the game's official description lists Update2 and HALLOWEEN. Older codes Update1 and 20K are still on code sites but no longer in the description.
How do you redeem codes in Mitosis?
Tap Shop, open the Codes tab, type the code exactly (it's case-sensitive) and press Redeem.
What do Mitosis codes give?
Codes so far have given Wheel Spins, a Gold Rush cash boost and Tokens. Update1 gave 3 Wheel Spins and a Gold Rush; 20K gave 20 Tokens and a level. Rewards for Update2 and HALLOWEEN haven't been published yet.
Why is my Mitosis code not working?
Check capitals (Update2, HALLOWEEN) and spaces, then rejoin a fresh server. Codes removed from the game description, such as Update1 and 20K, may have expired.
Who made Mitosis on Roblox?
Fauna Studio, a Roblox group. The game came out on September 30, 2026.
What are Tokens in Mitosis?
Tokens come from rebirthing and unlock the skill tree. The 2X Rebirth Tokens game pass (249 Robux) doubles them, and the 20K code gave 20 Tokens.