Building Block Simulator is a free puzzle game available on Android developed by KUMA GAMES. The game consists of 20 levels where players have to arrange the building blocks to form a complete structure.

The gameplay is straightforward and easy to understand. Players need to drag and drop the blocks into the correct position to complete the puzzle. Each level presents a new challenge with different shapes and sizes of blocks. The game also offers hints to help players who are stuck on a particular level.

The graphics are simple, yet colorful, with a cute and appealing design. The sound effects are minimal, but they add to the overall experience of the game. Overall, Building Block Simulator is a fun and addictive puzzle game that can keep you engaged for hours.