Grushy

Press "Go" to start game. Press "Stop" to quit. Buttons change from blue to Red in sequence, and then back to blue.
Try to remember the sequence, and touch each button in the same sequence.
Level 1 has 2 buttons, level 3 has 3 buttons etc. Last level 19 has 20 buttons.
The game level proceeds automatically.
If a wrong button is pressed, the level repeats with another random set of buttons.
You advance automatically to the next level if correct.