Science · Discovery Coast
Marble Mountain
Lay straights, curves, drops and splitters to roll marbles down the mountain.
- Grades
- 2–6
- Levels
- 48 in 2 tracks
- Free
- 10 levels
- Session
- 5–15 minutes
What it is
A terraced mountain in 3D. Place and turn track pieces so marbles roll from the launcher into the goal cups, then press Run to test your prediction. Rewind the run step by step to see exactly where a marble fell or got stuck. Marbles follow a simple step-by-step rule, not a full physics simulation.
What children learn
Gravity pulls objects downhill: marbles never roll uphill and fall off ledges unless a ramp carries them down. Learners predict, test, observe and improve a design, and plan routes with splitters that alternate left and right.
What it teaches
- Spatial reasoning
- Forces and motion
- State and sequencing
How to play
Pick a piece, turn it with Turn, then tap a square to place it (tap again to remove). Press Run to test, then Rewind or Reset. Drag to look around; + and − zoom. Keyboard: arrow keys turn the view, + and − zoom, R resets; on the build pad, arrow keys move, Enter places, T turns, Delete removes. A flat top-down map works without 3D graphics.
Plays with: Touch Mouse Keyboard Pen
Accessibility
- Read-aloud on request
- Fully playable with a keyboard
- Calm mode with reduced motion
- No timers or time pressure
- Never relies on color alone
- Quiet mode turns off sound effects
Level maps
Tracks and levels
Each track is made for a grade range. Start anywhere that fits — you don't have to play the younger tracks first. As a guest, your stars are saved on this device.
First Runs
Straights, curves and drop ramps for one marble.
2–3
24 levels · 5 free
First Runs
Straights, curves and drop ramps for one marble. · 2–3
- 1 Pebble Run 1 ☆☆☆
- 2 Pebble Run 2 ☆☆☆
- 3 Pebble Run 3 ☆☆☆
- 4 Pebble Run 4 ☆☆☆
- 5 Pebble Run 5 ☆☆☆
- 6 Pebble Run 6 Plan level
- 7 Pebble Run 7 Plan level
- 8 Pebble Run 8 Plan level
- 9 Pebble Run 9 Plan level
- 10 Pebble Run 10 Plan level
- 11 Pebble Run 11 Plan level
- 12 Pebble Run 12 Plan level
- 13 Pebble Run 13 Plan level
- 14 Pebble Run 14 Plan level
- 15 Pebble Run 15 Plan level
- 16 Pebble Run 16 Plan level
- 17 Pebble Run 17 Plan level
- 18 Pebble Run 18 Plan level
- 19 Pebble Run 19 Plan level
- 20 Pebble Run 20 Plan level
- 21 Pebble Run 21 Plan level
- 22 Pebble Run 22 Plan level
- 23 Pebble Run 23 Plan level
- 24 Pebble Run 24 Plan level
Levels after 5 are part of a PlayOwl plan. Free levels, saving and basic reports stay free.
Splitter Summit
Two or three marbles, splitters, rocks and whole routes to plan.
4–6
24 levels · 5 free
Splitter Summit
Two or three marbles, splitters, rocks and whole routes to plan. · 4–6
- 1 Summit Run 1 ☆☆☆
- 2 Summit Run 2 ☆☆☆
- 3 Summit Run 3 ☆☆☆
- 4 Summit Run 4 ☆☆☆
- 5 Summit Run 5 ☆☆☆
- 6 Summit Run 6 Plan level
- 7 Summit Run 7 Plan level
- 8 Summit Run 8 Plan level
- 9 Summit Run 9 Plan level
- 10 Summit Run 10 Plan level
- 11 Summit Run 11 Plan level
- 12 Summit Run 12 Plan level
- 13 Summit Run 13 Plan level
- 14 Summit Run 14 Plan level
- 15 Summit Run 15 Plan level
- 16 Summit Run 16 Plan level
- 17 Summit Run 17 Plan level
- 18 Summit Run 18 Plan level
- 19 Summit Run 19 Plan level
- 20 Summit Run 20 Plan level
- 21 Summit Run 21 Plan level
- 22 Summit Run 22 Plan level
- 23 Summit Run 23 Plan level
- 24 Summit Run 24 Plan level
Levels after 5 are part of a PlayOwl plan. Free levels, saving and basic reports stay free.
Off screen
Print & play
Paper activities that go with this game.
Keep exploring
Part of these collections
Science games by grade
More from Discovery Coast
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