🧮 Slide It Back

The sliding number puzzle (also known as the 15-puzzle). Tap tiles to slide them into the empty spot and order the numbers with the blank at the bottom-right.

✨ Features

  • 3x3, 4x4 and 5x5 boards
  • Always-solvable shuffles (built by legal moves)
  • Row & column multi-push — slide a whole line in one tap
  • Smooth slide animations and a celebratory wave on solve
  • Auto-save — the half-finished board comes back with you
  • Par tracking — your best move count per size
  • Undo when you trap yourself
  • Keyboard support on desktop
  • Original music & sound effects — one-tap mute toggle

🎮 How to play

  • Desktop: arrow keys move tiles into the blank.
  • Mobile: tap a tile next to the blank.
  • Order the numbers 1→N, blank last.

Runs in any modern browser — desktop, tablet and phone. No download, no account, progress saved locally.

Part of BrainBox — free brain puzzle games that run in any browser. More puzzles coming soon!

More information
Published 6 days ago
StatusReleased
PlatformsHTML5
Authorbrainboxgames
GenrePuzzle
Tags15-puzzle, brain, classic, logic, numbers, sliding-puzzle
AI DisclosureAI Assisted, Graphics