Contraption
Build a working chain-reaction machine from ramps, fans and gears so the ball finds its way home — then rewind the physics to see exactly where it went wrong.
How to play
Each level gives you a limited tray of parts and a ball that needs to reach the goal. Place parts on the field, aim them, and hit Run to drop the ball — the deterministic simulation plays out the physics. If it misses, scrub the timeline to rewind and step frame by frame, find the flaw, adjust, and try again. The more parts the ball actually uses, the higher your contraption scores.
- Pick a part, click to place it, drag while placing to aim ramps and fans
- Run the simulation, then drag the slider to rewind and debug
- Get the ball into the goal to clear the level
- Chaining more parts elegantly earns bonus points
Controls
- Desktop: click a tray part, click the field to place, drag to aim, Run, then scrub or step the timeline.
- Phone & tablet: tap a part, tap to place, drag to aim, and use the on-screen scrub controls — touch supported.
Game modes
- Daily: one shared seeded level per day
- Practice: endless fresh levels
Tips & strategy
- Use the frame-by-frame scrubber as your debugger — pause exactly when the ball goes astray
- Aim ramps to feed the next part rather than straight at the goal; chained parts score more
- Small angle changes have big effects, so adjust one part at a time between runs
What you'll learn
Contraption is a physics puzzle about building elaborate chain-reaction machines, training cause-and-effect planning.
- Skills: cause and effect, physics intuition, planning, problem-solving
- Best for: roughly grades 4–11 (ages 9–16)
- For parents & teachers: cause-and-effect engineering through play.
About Contraption
Contraption is an original free browser physics puzzle about building elaborate chain-reaction machines, with a scrubbable deterministic simulation for tuning every bounce. Made in-house for PlayPendium.
A free, original browser game on PlayPendium — no download, no install. Browse all games →
