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Beta Gameplay preview · 1.25× · muted

Useful Mistakes

Make your next mistake useful.

No download. No account.

Portrait and landscape layouts with touch, mouse and keyboard controls. Drag the recording or use arrow keys to inspect a failed run.

Useful Mistakes Beta

by Briar Games

Progress saved in this browser · This browser only

A LITTLE MORE ABOUT

Useful Mistakes

Repair marble-run machines by learning from each failed launch. Scrub the recording, freeze a moment as a solid bumper, and bounce the next marble off your own mistake into the goal. Solve 64 campaign machines across eight workshops, or try Quick Play, the Daily Machine and Clean Streak. Earn medals and spare parts for the Supply Shelf.

PuzzlePhysicsStrategyCampaignDaily

Your progress

Campaign medals, records, spare parts, Supply Shelf purchases, settings and saved campaign experiments stay in this browser. A running marble is not a live checkpoint; resume the saved experiment and launch again. Clearing site data removes local progress.

Content: Friendly workshop puzzles and cartoon marble collisions. Browser privacy settings can affect saving.

How to play

Tap or click launcher settings · 1–3
Choose a launch setting
Run · Space / Enter
Launch the marble
Drag the replay track or recorded path · left / right arrows
Scrub a failed run to select a useful moment
Keep · K
Freeze a recorded moment as a bumper
R · Escape / P
Reset the machine · Open the pause menu

Game menus include their own instructions. Sound begins after you interact.

Keep a little good going

More original games from Briar.

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