Your Obby Size turns classic parkour into a clever size puzzle. Instead of only timing jumps, you also change your character’s scale to fit the obstacle in front of you. Shrink to slip through tight gaps, grow to step over hazards, and keep moving toward the finish without getting caught by the course.
Key Controls
- Move: W,A,S,D or ARROW KEYS
- Jump: SPACE
- Look around: MOUSE
- Zoom: MOUSE WHEEL
- Chat: T
- Decrease/Increase Size: Q,E
- Pause: TAB
Game Overview
Your Obby Size game mixes 3D obby parkour with a simple but powerful mechanic: changing size on demand. Each section asks you to read the path and decide which scale makes it safer. Being small can help you avoid hits and squeeze through narrow passages, while being large can make jumps easier and let you climb over obstacles that would block a smaller character.
The course is designed to keep you switching. Some platforms are spaced just far enough that you will want extra reach, while other areas punish big movement and require precision. Hazards like lava or dangerous zones add pressure, so it is not only about finding the right route, but also adjusting quickly when the environment changes. If your version includes a dash or special move, you can combine it with size changes to save yourself from falls and recover faster after a mistake.
Progress is also tied to exploration. As you move through the map, you can collect trophies that reward careful routes and encourage you to check corners instead of rushing straight ahead. These collectibles can open hidden passages, unlock new areas, and give you extra motivation to replay stages while improving your control. With clean movement, smart camera angles, and quick size switches, you will start clearing sections that felt impossible at the beginning.
Key Features
- Size-shifting parkour: Grow and shrink to handle different obstacles and distances.
- 3D obby level design: Classic platforms, narrow paths, and tricky gaps built for timing.
- Hazards and pressure: Avoid dangerous zones like lava while staying on route.
- Collectible trophies: Explore for trophies that can reveal hidden paths and rewards.
- Replay-friendly challenge: Short sections that feel great to master with better switches and cleaner jumps.
FAQ
What is Your Obby Size?
Your Obby Size is a 3D obby parkour game where you change your character’s size to pass obstacles, avoid hazards, and reach the finish line.
How to play Your Obby Size?
Move with WASD, jump with Space, and use Q or E to shrink or grow. Switch size based on the obstacle: go small for tight gaps and precision, and go big for longer reach and safer climbs.
Is Your Obby Size free to play online?
Yes. You can play it for free on Rocket Games, and it typically starts quickly so you can jump into parkour right away.
When should I shrink or grow during a level?
Shrink when the path is narrow, the jumps require precision, or hazards are close. Grow when you need more reach, a stronger step over obstacles, or a safer landing on wider platforms.
What are trophies used for in Your Obby Size?
Trophies reward exploration and clean routes. In many versions, collecting them helps reveal hidden passages, unlock new areas, and sometimes grants cosmetic rewards like skins.
Final Thoughts
Your Obby Size stands out because it adds a smart twist to parkour. The size mechanic creates constant mini-decisions, and learning when to switch becomes just as satisfying as landing a perfect jump. If you enjoy obby games that feel fresh, challenging, and replayable, this is a great one to master.
More Games Like This
If you enjoy parkour with creative twists, you can keep climbing in Obby Roads, take on vertical challenges in Obby Tower, or test your survival instincts in Last to Leave Circle Obby for more obstacle-based fun.











































































