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Ignite your inner beast and lift the heaviest weights in the universe. Grow BIGGER and face rivals who keep getting stronger. Start with a relaxing idle clicker experience to build muscles, then push yourself in challenging arcade-style mini-games.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Social Deduction Fest ends
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Try this game before buying.
Idle Muscle Up is an idle-clicker game with arcade-style elements. Lift weights across a variety of worlds, build muscle, work as a courier to earn money, and compete in exciting mini-games. Winning competitions rewards you with gold, which can be spent to unlock loot boxes and acquire equipment. Equipment boosts your muscle-building efficiency.
The game features two gym worlds, each with five workouts, plus a carnival world where you can join boxing matches and pushing race competitions.
Watch your character’s body transform as you work out
3 gym worlds and 1 carnival world
Boxing mini-game with arcade-style mechanics
Pushing race mini-game with arcade-style mechanics
XP-based equipment system (grind endlessly to level up your gear)
20+ items to customize your build, boosting exercise speed or muscle gain
Full input support: play with a gamepad, keyboard, or mouse
Extremely lightweight in both disk size and performance — runs smoothly even on a potato 🥔
