Muscle Transform Simulator Guides Hub

Muscle Transform Simulator is a live Roblox incremental gym sim from Castaway Studios RBLX. You spawn scrawny, press F to transform, train arms, legs, and body, smash city objects for Gold, buy the next character, and unlock worlds until you can rebirth. This hub maps that loop onto the walkthroughs on this wiki so you open the right page instead of repeating the lobby tutorial.

The game released on 8 September 2025, updated on 16 June 2026, and has passed 101 million visits. Servers hold 10 players. It is free-to-play online multiplayer, not a local split-screen gym, and it is fully live.

First session

If you just joined, start with the first-hour walkthrough. That guide covers redeeming codes, transforming, tapping the three machines, smashing a Gold cluster, buying Gray after Rage Man is maxed, hatching a cheap lobby egg, and turning auto-train on. The gear icon in the top-left holds settings, auto-train, and the codes box. Claim every live string on the codes list before you sit down so potions and spins are ready on the first set.

Training, Gold, and rebirth

Training is the bottleneck. Sit on the arm, leg, and body machines, tap for reps, or enable auto-train in settings. Public videos and player tools often describe each body part maxing around 100 on the current character. Gold weights unlock in order. Titanic weights arrived in a later update. Galaxy weights cost about 500 Robux. Pets hatch from eggs and keep helping while you train. Strength, Gold, Training, and Super potions belong on timed sets. Full machine order, weight sequence, and potion timing live in how to train.

Gold does not drop from the pads. Leave the gym, jump-punch clusters of cars, trees, and crates, and charge for a moving smash. Press V to teleport back when pockets are full. World 2’s 15-tree quest is a common stall if pets and weights are still starter-tier. Routes, charge windows, and when to smash versus train are in how to smash for Gold.

Characters are sequential. Max the current form, spend Gold, transform, and repeat. World 1 is Rage Man, Gray, then Spike Man. World 2 is Warrior, Baldy, and Hero; creator videos also call that anime world Goku, One Punch Man, and All Might. World 3 includes Cake and odd forms. World 4 is Galaxy Creature or Galaxy Guardian, Money Man, and Void Guardian. World 5 is Gladiator, Warrior, and Dark Warrior. Venom costs about 800 Robux. Master Rage claims about 30 percent over your best character. King Hulk is a late form. Use the players hub as the roster home so extra names do not sneak in.

Inputs are on the controls sheet. Diamond wraps are on how to get auras. World 6 ice (Ice Warrior, Frozen Evil) is on the World 6 update.

Finish a world’s characters to open the next map. Rebirth is for after that roster is complete, not after your first Rage Man bar. Castaway has not published a clean reset table, so the rebirth walkthrough lists Gold sinks to empty first and states what is actually known.

Rankings and patches

When two pets or two forms look similar, compare them on the tier list hub before you dump Gold. Patch context, including later weights and auras, lives on the updates hub. Check those hubs when a thumbnail promises a secret body this wiki will not invent.

Reading order for one sitting

Open codes, finish the first-hour page, train until a bar stalls, smash a dense street, then confirm the roster. If a world gate is locked, you missed a character, not a hidden portal. If rebirth is available and Gold is idle, read the rebirth page before you click. That sequence is the gym.