Obby: Pump Up Your Muscles! 1 per second
About Obby: Pump Up Your Muscles! 1 per second
In Obby: Pump Up Your Muscles! 1 per second you start as the weakest inmate in a prison gym and work your way up by training relentlessly. You perform exercises like push-ups, sit-ups and pull-ups to gain muscle and strength points. Each workout session makes you visibly bigger and more powerful. Your goal is to transform from a scrawny newcomer into the strongest prisoner in the yard, earning respect from other inmates as you climb the strength rankings.
The game keeps you hooked with steady progression and visible results after every training session. You also need to eat food to fuel your workouts, adding a resource-management layer to the muscle-building grind. Poki Games offers this title so you can experience the satisfying loop of lifting, growing and dominating the prison hierarchy through pure physical power.
How to play Obby: Pump Up Your Muscles! 1 per second
WASD – move
Space – jump
E – interact with equipment and food
Left mouse button – train
Mouse – look around
Mouse wheel – zoom
On-screen joystick (mobile) – move
Jump button (mobile) – jump
Tap (mobile) – train
Obby: Pump Up Your Muscles! 1 per second – game details
- Developer
- GamePush
- Genre
- 3D Games
- Platform
- Browser – desktop, phone and tablet
- Price
- Free to play
- Added
- October 5, 2026

















