Working Muscle Simulator Codes (1)
Last updated August 21, 2026
| Code | Reward | Works? | |
|---|---|---|---|
UPD2New | Rewards | Did it work? |
How to redeem codes in Muscle Simulator
- Launch Muscle Simulator on Roblox.
- Look for a Codes, Shop or settings button — usually on the side of the screen.
- Paste the code exactly as shown above. Codes are case-sensitive.
- Press redeem to claim your reward.
Codes expire without warning — if one fails, it was almost certainly pulled by the developer.
Found a code we're missing?
Submit it and we'll verify it before it goes live.
About Muscle Simulator
🔥 Use code "UPD2" for Rewards! 👍 NEW CODE releases once the game gets 5,000 LIKES! 🔥 Updates EVERY Saturday! 🚨UPDATE 3🚨 🐶 HUGE Dominus Pet! 💪8 New Weights! 🧬3 New DNA! 🎯 2 More stage! ⚖️ Small Balancing Fixes! 🐛 Bug Fixes! 💪 Lift weights to grow bigger and stronger! ✨ Buy Stages to unlock new gyms and get more rewards! 👊 Fight other players and become the strongest! 🏆 Compete with other players to get on the leaderboards! 🎁 Premium Benefits! +20% More Strength Gain +20% Coin Gain