Electronic Fifteen

A 4x4 board sits on the screen with one space missing. In Electronic Fifteen, numbered tiles fill the other 15 cells, and the puzzle asks for ascending order from the upper-left corner across each row. The layout follows the classic childhood number puzzle, using a compact square grid and a timed record chase once the arrangement is solved.

How to play?

Tap or click a tile beside the empty cell, and it slides into that space. Build the top row as 1, 2, 3, 4, then move down through the next row without scrambling what is already placed. Near the bottom, the final two rows usually take the most moves and the most retries. After a completed board, the game logs your finishing time and total clicks as a personal record. Another run gives a chance to beat both numbers.