A free app for Android, by soneg84 Games.
15 puzzle HD is a free game that lets you play with beautiful, high-quality graphics.
The gameplay is very simple. You just need to tap on the tiles to place them in the correct order. You can tap on the tiles to move them, or you can swipe them to do that.
To move a tile, you need to use the space in front of it. You can only use the space on the right or left side.
If you get stuck, you can choose to use the hints that will help you solve the puzzle.
The game has several levels of difficulty, so it's suitable for kids, kids at heart, and people who just want to play a quick game.