Marble Runbuild the track, drop the marble — play online free
Pick the ramp, tap a square under the marble, and press Run.
What is Marble Run
The marble run toy, turned into a physics puzzle
A marble run is a track built from modular pieces that carries a marble from the top of a frame to the bottom. This Marble Run game puts that toy on a grid: you get a drop chute, a goal cup, and a tray of track pieces. Place and rotate them, release the marble, and tune your track until the marble lands in the cup — ideally passing every star on the way.
- 14 handcrafted levels
- Each level teaches one piece — ramps, curves, springs, boosters, lifts — then combines them. Every level is solver-checked to be clearable with all of its stars.
- Real marble physics
- Gravity, momentum, bounces, and drag on a fixed timestep. The marble speeds up on slopes, flies off edges, and an unchanged track always runs the same way.
- Sandbox mode
- A bigger board with unlimited pieces. Build the longest marble run you can from the top-left chute to the bottom-right cup; your longest run is saved.
- Plays in your browser
- No download, no plugins, no account. Tap or click to build on any phone, tablet, or computer. Stars and tracks are saved on your device.
How to play
How to play Marble Run
Marble Run is a build-and-test loop. Read the drop, place a few pieces, release the marble, and adjust until it lands in the cup.
- 1
Read the board
Every level shows a yellow drop chute where the marble starts, a green goal cup, and up to three stars. Grey stone pieces, walls, and red spikes are fixed. The bottom edge is open — a marble that falls off it is lost.
- 2
Place your pieces
Pick a piece from the tray and tap an empty square to set it down. Tap a piece you placed to rotate it, or tap its tray button again to rotate the next one before placing. The badge on each tray button shows how many you have left.
- 3
Release the marble
Press Run (or Space). The marble drops from the chute and rolls under real gravity — it speeds up on slopes, flies off edges, bounces off blocks, and launches off springs. Press Stop at any time to go back to building.
- 4
Reach the cup, collect the stars
The run is won the moment the marble lands in the goal cup. Pass through every star on the way for a perfect three-star clear. Your pieces stay on the board between runs, so adjust one piece and run it again.
Tips for better tracks
- Run the marble once with an empty board to see where it falls — most solutions start by catching that first drop.
- Follow the stars. They sit on the path the level was designed around, so they show you where the marble should travel.
- Use a curve instead of a ramp to catch a long fall: curves keep most of the speed, ramps lose more of it on impact.
- A marble flying too far? Put a block in its path. It stops dead and drops straight down.
- Springs fire at a fixed speed, so a spring hit gently still launches hard — great for crossing spikes.
- Stack upright boosters to build a lift, and cap the shaft with a ceiling ramp to send the marble sideways at the top.
- Change one piece at a time between runs. The physics is repeatable, so you can see exactly what each change did.
FAQ
Marble Run, answered
Straight answers about the free Marble Run building game you can play online in your browser.
What is Marble Run?
Marble Run is a physics building game based on the classic marble run toy. Each level has a drop chute, a goal cup, and a tray of track pieces — ramps, curves, planks, springs, boosters, and blocks. You place and rotate the pieces on a grid, release the marble, and watch it roll under gravity. Get it into the cup to clear the level, and pass through the stars on the way for a perfect score.
Is Marble Run free to play online?
Yes. playmarblerun.app is completely free and runs entirely in your browser. There is nothing to buy, download, or install, no account, and no paywall. All 14 levels and the sandbox are available to everyone.
How do you play Marble Run?
Pick a piece from the tray, tap a square to place it, and tap it again to rotate it. When your track is ready, press Run. The marble drops from the yellow chute and follows your pieces. If it misses, press Stop, adjust a piece, and run it again. Reaching the green cup clears the level and unlocks the next one.
What do the different pieces do?
Ramps are 45° slopes. Curves are guide tracks that turn a fall into a fast sideways roll. Planks are floors, walls, or ceilings. Springs launch the marble off their face. Boosters are either floor speed pads or, turned upright, lifts that carry the marble up. Blocks are solid stops. Red spikes end the run, and grey pieces are fixed parts of the level.
Is the physics realistic?
The marble is simulated with real gravity, momentum, bounces, and drag on a fixed timestep, so it accelerates down slopes, carries speed off edges, and loses energy on hard impacts. A few pieces are deliberately game-like: curves steer the marble along the track, springs fire at a set speed, and lifts cancel gravity. The same track always produces the same run.
How do stars work?
Most levels have three stars, and a few have two. A star counts when the marble passes through its square on the way to the goal. You only need to reach the cup to unlock the next level; collecting every star is the extra challenge. Your best result for each level is saved.
What is the sandbox?
The sandbox is a larger 10×14 board with unlimited pieces and no stars. The marble starts in the top-left and the cup is in the bottom-right. The game records your longest successful run time, so the challenge is to build the longest marble run you can that still finishes.
Does Marble Run save my progress?
Yes, on this device. Unlocked levels, best stars, your unfinished track on every level, and your sandbox build are stored in your browser’s local storage. Nothing is sent to a server and there is no account, so a different browser or cleared site data starts fresh.
Can I play Marble Run on my phone?
Yes. The game is built for touch: tap to place and rotate, drag to paint a row of pieces, and long-press to remove one. The board, the piece tray, and the Run button fit on a portrait phone screen without scrolling.