Digital Eliminate-2048like

This game combines arithmetic, 2048, elimination and some rougelike elements.
Introduction:
By adding numbers to the square, you can eliminate the square with the same connected numbers. The more eliminated, the higher the score.
Each time limit is three minutes, the target score can be reached to pass, and the exceeded score can be accumulated to the next level for use.
There are many props available in the game!
How many points can you get at most?
Come and challenge!