4x Puzzle

This logical puzzle is easy to learn, but hard to master. Your task is to add number blocks to the field which are multiples of 1, 2 or 4 depending on the difficulty you select. If two adjacent blocks have the same value, they will be removed. You can combine blocks: drag them from the tray and drop them on top of another block. Their values will be summed up. Be careful though, the total value of a block can never be more than 100. Can you achieve a high score?

Click on the number, then drag and drop where you want to place it.