Pick one, then press Play. Undo brings your own scene back.
Select
Click an object to select it, drag it to move it.
Draw
Click and drag to freehand a track, slide or wall.
Plank
Click and drag to lay down a straight plank, handy for quick ramps and shelves.
Ball
Click the canvas to place a ball.
Box
Click the canvas to place a box.
Triangle
Click the canvas to place a wedge. Use the rotate buttons to turn it.
Goal
Click the canvas to place a goal zone. It lights up when something free-moving touches it during Play.
Play / Stop
Play starts gravity and physics. Stop puts everything back where you left it.
Clear
Remove everything from the canvas.
Export
Save the current scene to a file.
Import
Load a saved scene file, replacing the canvas.
Grid
Show or hide the background grid, a visual guide for lining things up. Your choice is remembered.
Examples
Load a ready-made design, such as a slide, a roller coaster or a peg board. Press Play to watch it work, then change something. Undo brings your own scene back.
Demo
Watch an automatic walkthrough: it builds a slide, a ball and a goal, then plays it. Your own scene is put back afterwards, or you can keep the demo scene.
Undo / Redo
Step back or forward through your edits (Ctrl+Z, Ctrl+Y or Ctrl+Shift+Z).
Autosave
Your scene is saved in this browser after every change and comes back when you reopen the page. It stays on this device, so use Export to keep a copy or move it elsewhere.
Lock
Right-click an object, or use the Lock button in the bottom bar (the only way on a touch screen). Locked objects (padlock) stay fixed during Play.
Blue handle
On a selected ball, drag it around the ball to set its initial spin.
Surface
With an object selected, pick Ice (slippery), Rubber (bouncy) or Sticky (grippy) from the bar at the bottom.
Rotate / Delete
Also in the bottom bar. The Delete key removes the selected object too.