Last Verified: August 2026 | Checked this week against the live game.
Muscle Transform Simulator codes hand out spins and potions. Five of them work this month. The game itself tells you to go looking for codes, so this is one of the rare cases where the developer has confirmed they exist.
Spins open the wheel and potions speed up training or gold. Below are the five that work, where the box is hidden, and the one code that lists disagree about.
Active Muscle Transform Simulator Codes (August 2026)
| Code |
Reward |
Action |
| MUSCLE |
1 Spin. The newest one, and the easiest to remember. |
|
| SMASH |
1 Gold Potion. Gold is what buys your upgrades, so this one is worth using early. |
|
| BATTLEPASS |
1 Training Potion. A training boost rather than a spin. |
|
| UPDATE3 |
1 Spin. One more spin of the wheel, from the third update. |
|
| WORLD2 |
1 Strength Potion. The oldest of the five that still works. |
|
Type them exactly as shown. Codes are case-sensitive here, so MUSCLE in capitals is not the same as typing it in lower case.
One code to test yourself: SPIN
It used to give 5 wheel spins. The freshest list says it has stopped working, and two older ones still show it as live. Typing it costs you nothing, so try it and see which is right. That is more useful than us picking a side for you.
How To Redeem Codes in Muscle Transform Simulator
1Open Muscle Transform Simulator and wait until you have loaded into the gym.
2Look at the top left corner of the screen and press the settings cog.
3Find the CODES box in the menu that opens.
4Type or paste one code into it, exactly as written above.
5Press Enter. The spin or potion lands straight away.
6Repeat for the rest. Each code works once per account.
What Spins and Potions Actually Do
Spins go into the wheel, which is where the game hands out its bigger prizes. Two of the five codes give one spin each, so grabbing both is worth a couple of minutes.
Potions come in three kinds here. A training potion makes each rep count for more, a strength potion pushes your strength up directly, and a gold potion gets you more of the currency you spend on upgrades.
When Do New Muscle Transform Simulator Codes Drop?
The game points players at its social links to find them, so new ones turn up there rather than on a set day. Two of the five working codes are named after updates, which suggests they arrive alongside them.
Nobody outside Castaway Studios RBLX can promise the next one, so this page is rechecked every month instead of guessing at dates.
About Muscle Transform Simulator
Muscle Transform Simulator starts you as a beginner at a gym machine. You train for strength, watch your muscles grow, unlock characters that are each stronger than the last, collect pets that speed up training and move through new worlds as you go.
It comes from a verified group called Castaway Studios RBLX and opened in September 2025. It has passed 90 million visits, and about 95 in every 100 votes on it are likes.