💪 Muscle Building Simulator 2
A Roblox experience owned by Muscle Building Community.
Description (written by the developer; not a statement by this register)
💪 Muscle Building Simulator 2 Welcome to Muscle Building Simulator 2, where your journey from weak to beast begins! Start as a beginner and train your strength by lifting weights, completing workouts, and performing Rebirths to gain powerful multipliers. As you grow stronger, you’ll unlock new worlds to explore, collect unique pets to boost your progress, and compete to become the strongest player on the leaderboard. 🎯 Click to increase strength 🔁 Rebirth to gain multipliers 🌍 Unlock new worlds and challenges 🐾 Hatch pets to boost your stats 💥 Upgrade your gear and dominate the gym Whether you're casually grinding or aiming to be #1, there's always progress to make. Are you strong enough to become the ultimate muscle champion?
Last updated by the developer 7 Aug 2025, 19:47 UTC.
Live players over time
Growth
Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.
| Measured (UTC) | Players | Change |
|---|---|---|
| 17 Sept 2026, 02:53 | 0 | first reading |
Concurrent players at each of our measurements (insert-on-change).