Sand Trap, developed by Easy But Useful, is a free puzzle game available on Android. The objective of the game is to get as much sand as possible out of the box and into the pail. To do this, you can rotate the box by clicking and dragging with the mouse or using the left and right arrow keys.

The game has multiple levels, and as you progress, the difficulty increases. You need to navigate the sand through the box and out the opening, making sure it drops into the red pail. If too much sand misses the pail, you can always reset and try again. Once the pail is overflowing with sand, you can move on to the next level. You can also replay the level and try to beat your best time. Overall, Sand Trap is a fun and addictive puzzle game that will keep you entertained for hours.