this is a good game but I feel like by just using the number in your game you're avoiding to really think about the theme and make something creative.(ie for gmtk i feel like the only one was supposed to revolve around mechanics)
It is a typing game with only one character. Typing games usually have more than one character. The inspiration was taking something the players expect there to be multiple of (letters in a typing game) and only giving them one. Also, games like Doki Doki and Frog Fractions were big inspirations.