This is not a game, but I'd suggest installing hardcore-mode (available on Melpa too), and configure it to your liking (here's my configuration if interested). That package when enabled globally will force you to not use the arrow keys and use the C-f , C-b , C-n , C-p bindings instead. So much so that now using those bindings has become a second nature to me.

PS: There's an emacs-dedicated stackexchange site in case you didn't know.