15 Puzzle: Water World

Marine life fills the picture set. 15 Puzzle: Water World uses sliding image tiles across 54 puzzle rounds, with sea creatures appearing in the finished pictures instead of plain number layouts. Fish from seas and oceans show up in many body shapes and colors, and each solved board reveals another underwater image.

How to play?

Pick any available round, study the full image, then rearrange the mixed pieces on the grid. Tiles beside the empty cell are the only ones that can move, shifting the gap across the board with every slide. Completing the picture in its proper layout passes the round. The next round unlocks after that.