Sum Puzzle - Unlimited Level is a free puzzle game developed by QA Studios for Android devices. The objective of the game is to drag all the white tokens at the bottom of the screen and drop them in their correct positions. The puzzle is solved when the sum of each row and column equals their corresponding token outside the puzzle.

The game features five colored tokens, but only the white token can be moved. The blue token is a hint, while the orange token indicates that the sum of the corresponding row or column is less than the number of orange tokens. The red token means the sum is over, and the green token means equal calculation. However, the appearance of a green token does not necessarily mean that the white tokens in the corresponding row or column are in the correct positions.

Sum Puzzle - Unlimited Level offers three game modes: time limit, relax, and level practice. In time limit mode, there is a time limit for each level, and the player's score is recorded. In relax mode, there is no time limit, and the score is not recorded. In level practice mode, the player can select the level they want to start at, and the score is not recorded.

Overall, Sum Puzzle - Unlimited Level is a challenging and entertaining puzzle game that will keep players engaged for hours.