Cid2Mizard proposed the first version of a puzzle game called "Digitory DS", a remake of the flash game of the same name.
Quote:
You control with the stylus numbered balls on the blue band and need to drag in the 4-way to make money from value to collect and remove the blocks in the center.
Move your ball touching the blue tape, and start reaching your ball.
You get 5 pts for 1 short, 5 to 10 + 2 are both, 5 + 10 + 15 to 3 are, etc ...
There are currently 15 levels, but ultimately the game will count 60, but not all identical to the flash version.
So you enjoy working in mental calculations.