Unlock Blox is a simple, free and addictive puzzle game. The goal is to unlock the yellow block out of the board by sliding the other blocks out of the way. Unlock Blox is a classic and pleasurable unblock puzzle game! Use your brain and slide blocks to unblock the yellow block out of the board. Try your best to solve stages and get 3 stars! Improve your cognitive & problem-solving skills with Unlock Blox puzzle free game. The game is tiny in size but mighty in puzzles. Exercise your brain with Unlock Blox.