One Machine a Day

You have a goal: get the ball into the basket, or ring the bell. You have a box of parts: ramps, springs, wheels, weighted ropes, levers and switches. The rest is up to you.

Build your machine, press Test and watch it run… or fail. When it fails, the game leaves the ball's path drawn on the board, marks the part where things went wrong and tells you in one line what happened. Change a part and test again. Any machine that works counts, not just the author's.

• 40 puzzles in 8 sets, from the first nudge to master machines
• Machine of the day: a new challenge every day, the same for everyone
• Daily streak, with one missed day forgiven each week
• Slow motion, pause and an exact replay of every attempt
• Share your machine with a short code: whoever opens it watches it run
• Stars for solving with fewer parts
• Statistics and 9 medals to earn, with confetti for every machine that works
• Optional hints when you are stuck
• Plays offline, no account, no sign-up
• Free, with ads and no purchases
• In English, Portuguese, Spanish, French, Italian and German

For people who like to build, experiment and understand why things work.

Recent changes:
Ads are now always clearly labelled. Small fixes.