A free app for Android, by Alcyone.

Unblock Brick Six by Six! is a puzzle game with a difference. The gameplay is based on sliding the blocks, but you can only move in a specific way. You can only move the red block out of the 6×6 board by sliding the other blocks out of the way.

The game is a challenge for your brain and logic skills. Each level contains 500 puzzles. The difficulty increases as you play, the number of blocks and bricks increases, but so does the number of moves you can make. You can play in the expert mode with a score of 500 points or in the normal mode with a score of 400 points.

The game is designed to develop the cognitive skills, and the logic and reasoning abilities, in order to have a good effect on the mind.