Obby: Build a bridge

Obby: Build a bridge puts you in charge of a tiny adventurer who needs to get from one side of a gap to the other. The catch? There’s no road—just empty air and a stack of planks. You decide where each piece goes, and the game’s physics engine decides if your ramp, staircase, or wild contraption actually holds together. It’s a test of geometry, patience, and a little bit of nerve. Each level presents a new distance to cross, and your approach can be as careful or as reckless as you like. A short, sturdy path might be the safest bet, but sometimes you have to build out and leap across. The game rewards planning but also leaves room for happy accidents. With simple controls and a playful vibe, it’s easy to start, hard to put down, and always ready to let you try again after a spectacular collapse.

WaffleMath

Obby: Build a bridge

Common Core State Standards

Every game supports specific Common Core standards. Browse the full standards library.

MP1Make sense of problems MP5Use tools strategically MP7Use structure MP4Model with mathematics 1.G.A.1Shape attributes K.G.A.1Position words 2.G.A.1Draw shapes with attributes 8.G.A.1Transformation properties

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2nd Grade · 3rd Grade · 4th Grade

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What is Obby: Build a bridge

Think fast and build smart—every plank you place could be the one that saves your run or sends you tumbling. Can you bridge the gap and reach the goal?

How to Play

Use your mouse or touch to select and place bridge pieces one at a time, then hit the go button to send your character across. Watch how the structure reacts, and adjust your next moves based on what holds and what wobbles.

Tips for Playing

Balance the weight evenly—don't put all planks on one side.
Use shorter segments to keep the bridge more stable.
Plan your route before placing your first plank.
If a bridge falls, rebuild the same spot with a slightly different angle.
Test the bridge with a small step before committing to a full run.

Frequently Asked Questions

What happens if my bridge collapses?

Your character falls, and you get to rebuild the bridge from scratch. Use the feedback from the collapse to improve your design.

Can I undo a misplaced plank?

Yes, you can remove the last placed plank and try a different spot. Just look for the undo button near the build area.

Is there a limit to how many planks I can use?

No, you can place as many planks as you need, but more planks don't always mean a better bridge. Stability comes from good placement, not just quantity.

Why does my bridge wobble even when it looks solid?

The physics simulation reacts to weight and balance. If the bridge is too long without support in the middle, it will sag or topple. Adding a support piece or redistributing planks usually helps.

Can I play this game on my phone?

Yes, the game works with touch controls, so you can build bridges directly on your phone's screen.

Are there different levels or is it endless?

The game features a series of levels, each with a larger gap or trickier layout. You can replay any level to improve your time or just for fun.