Core mechanics
Photo puzzle: a brain teaser made by dividing a photograph into sections that must be reordered. Sliding puzzle: a puzzle whose parts change position through sliding or selection. Strip: a horizontal section of an image. Grid: an image divided into rows and columns.
- ✓ Correct position: a section's original location
- ✓ Hint: a temporary preview of the complete photograph
- ✓ Move: one change to the puzzle order
Results and progression
Completion time: the interval between starting and solving. Stars: a one-to-three summary based on efficiency. Level: a difficulty step that determines the number and arrangement of sections.
- ✓ Leaderboard: a comparative ordering of results
- ✓ Streak: consecutive days with a completed challenge
- ✓ Pack: photographs grouped around a theme
Special modes
Countdown: a run that must be completed within a time limit. Blackout: a mode that hides the photograph after a short look. Daily challenge: a puzzle shared by all players during the same period.
- ✓ Standard: play without a special limit
- ✓ Challenge link: a URL inviting a friend to the same puzzle
- ✓ PWA: an installable website that behaves like an app