Gym Star Simulator is a Roblox bodybuilding game where you work out to build muscle and stamina, hatch and upgrade pets, hire trainers, and compete in bodybuilding competitions against other players. This guide covers how to get started, how each core system works, and what to do when you feel stuck.
In shortFollowing the tutorial and redeeming codes before anything else puts you ahead from day one.
The tutorial walks you through your first workouts and introduces the main systems, so see it through to the end rather than skipping it. Once you're in, find the code-entry screen and redeem any active codes to collect free Gym Tokens early. Those tokens go toward pets and trainers, which are the two things that make every workout more efficient.
Complete the tutorialit introduces lifting, stamina, and the gym menu all at once.
Open the code-entry screenredeem any active codes for free Gym Tokens before you spend anything.
Try lifting weights and using machinesboth build muscle and stamina.
Hatch your first peteven a basic pet starts boosting your progress right away.
Raise your gym leveleach level unlocks new equipment you cannot access any other way.
In shortUpgrading the pets you already have beats chasing new ones at random.
Pets are obtained by hatching eggs, and the game holds hundreds of them, each with its own abilities. Hatching requires time or in-game items, so plan your resources before you crack open a new egg. Upgrading a pet increases the muscle and stamina boost it gives you during training. Event pets appear for a limited time, so they are worth grabbing when a seasonal event runs.
Sourceăeggs, which require time or in-game items to hatch.
Upgrade effectăhigher muscle and stamina support during every workout.
Rare petsăharder to hatch, but the ability boost justifies the effort.
Event petsălimited-time only, so prioritize them when an event is live.
03Live and upcoming eventsEvents
Events running now or coming soon. They have fixed dates, so check them first.
Live now â
NEW Halloween Event đ
Take on some of the strongest monsters around while completing quests to earn special candies and claim a variety of spâŚ
In shortPicking trainers that match your current goal and keeping them upgraded makes the biggest difference to your token income.
Trainers are characters you hire to support your workouts. Each one has a unique set of abilities, and upgrading them increases the Gym Tokens and bonuses you earn. Reading each trainer's ability description before hiring helps you pick one that fits what you are trying to do. Running multiple trainers at the same time is possible, and combining their effects is how experienced players push their progress further.
Tips worth knowing
Read a trainer's ability description before hiring so you know exactly what you are paying for.
Upgrade your trainers regularly â higher-level trainers deliver noticeably more tokens and bonuses per session.
Hire more than one trainer when you can â running them together multiplies their combined effect.
05
Competing in bodybuilding competitions
Check
In shortGoing into a competition with strong pets and a well-upgraded trainer gives every player, paid or free-to-play, a real shot at rewards.
Competitions run regularly and are open to everyone. Winning earns you valuable rewards and Gym Tokens, and there are also ranking rewards for finishing near the top. Your muscle level and pet development both factor into how you perform.
Check the competition requirements and reward list before entering.
Activate your pet buffs before the competition starts so none of that bonus goes to waste.
Aim for the ranking rewardsthe leaderboard prizes are worth the extra effort.
Stuck? Try a video
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In shortCodes expire, so use them as soon as you find them.
The game has a code-entry screen where you type in codes to claim free Gym Tokens and special items. Each code can only be used once per account. New codes are announced on the game's official social media, so following those channels keeps you from missing one. At the time this site last checked, there were two working codes tracked â check the live codes section of this page for the current list.
Worth watching out for
Each code works only onceentering a code you have already used will not give you anything.
Codes have expiry dates, so do not sit on one after you find it.
Follow the official social media accounts to catch new codes as soon as they drop.
In shortA quick audit of your pets, trainers, and available gyms almost always reveals where the bottleneck is.
If your muscle gains slow down or a competition feels impossible, the issue is usually one of three things: pets that have not been upgraded in a while, a trainer that no longer matches your current level, or a gym you unlocked but never explored. Go through each of these before assuming you need to grind more.
Check whether your pets are upgraded to a level that matches your current muscle target.
Verify that your trainer's bonuses are actually active and not sitting idle.
Look in the gym menu for any newly unlocked gyms or training methods you have not used yet.
Glossary
Glossary
Gym Tokens
The main currency earned through training, used to upgrade pets and hire or improve trainers.
Stamina
A resource that drains as you train and must recover before you can work out again.
Trainer
A hireable character who boosts the Gym Tokens and bonuses you earn from each workout.
Pet hatching
The process of using eggs â which require time or in-game items â to unlock a new pet.
Rare pet
A pet with a low hatch chance but stronger abilities that make it worth the extra effort to obtain.
Bodybuilding competition
A recurring in-game event where your muscle level and pets are measured against other players for rewards.
Global leaderboard
A ranking board that shows how your muscle progress compares to every other player in the game.
Common questions
FAQ
Can I enjoy this game without spending Robux?
Yes â pets can be hatched and upgraded entirely without paying, and redeeming codes gives you free Gym Tokens. Competitions are open to every player regardless of spending, so free-to-play accounts can still place high on the rankings.
How do I get more pets?
Hatch eggs using the time or items the game requires for each one. Events also run from time to time and give you a chance to hatch limited pets that are not available any other way.
Why should I enter competitions even early on?
Competitions pay out Gym Tokens and other rewards. There are also ranking rewards for finishing near the top.
Updated Sep 10, 2026
Game updates can change what is on this page. If you spot something, get in touch and let us know.
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