The concept is interesting. If you can find something to do between being asked to remember something and inputting the answer you'll have a solid game. Right now it feels a bit boring just waiting for something to happen.
Idea and art are pretty cool though.
FYI - a little bug, the prompt for holding control came up and went away really quickly so wasn't able to read it, other than seeing the word control and guessing what it did by pressing it.