[m19n]

I thought it would be a memory game like Simon [1] where the game prints one line and then your repeat it. If you are correct it starts from the first line but adds another line for you to remember.

I could see the fun in that. Also you wouldn't have the issue of people complaining about right and wrong answers because you would have to write just as it was printed.

[1] https://en.m.wikipedia.org/wiki/Simon_(game)