Once upon a time, when I was in secondary school, a class-mate brought his new cool gadget watch which was a Casio calculator watch. It was a very cool watch, and cooler still, it had a very simple game on it. This is my approximation of the game. I think it is short and simple enough that anyone can make modifications to make it more playable. Do whatever you may want to it, as long as give credit to the original game and this version. Enjoy!

I wrote this on my linux box. You will need a C++ compiler and the ncurses library to compile. Use

g++ -o numbers numbers.c -lncurses

to compile. The defaul configuration is that 'z' decreases, 'x' increases and space cancels. Use 'q' to quit the game.