Blocks Sum is a free puzzle game for Android developed by RDF Apps. The objective of the game is to move and merge blocks with the same number to reach the highest number of blocks possible. The game has different goals, starting from getting the 512 block up to the extremely hardblock.

To achieve these goals, the player must think strategically and plan each move carefully. The game is challenging and addictive, making it a perfect choice for puzzle lovers. The game offers the option to compare scores with friends to see who can get the highest blocks.

Overall, Blocks Sum is a fun and challenging game that will keep you entertained for hours. With its simple yet addictive gameplay and the ability to compare scores with friends, it is definitely worth a try for anyone looking for a new puzzle game to play on their Android device.