SUM10 is a fast-paced one-button game.
You have to move forward through a table of numbers and sum them up to make multiples of 10. You can see the numbers you currently have on the right, which dissapear when you make the next multiple of 10. You can choose to go forward or up and press a button to move once you make your choice. The game field is constantly sliding to the bottom left corner and you have to avoid the borders of the screen.
The game is over when the numbers on the right reach the bottom of the screen or your position crosses the borders of the screen.