The game would be about typing english words as fast as possible to damage the boss, while moving around the bullet pattern it fires at you.
The thing is that moving would be mapped, on a qwerty keyboard: WASD, IKJL, and the up, 5, left and right buttons on a numpad.
There's an interesting idea in there somewhere. Suppose movement was *only* done using alphabetic keys. Then the words you typed would have the side effect of moving you around in various ways. To allow you some freedom of movement, you'd have a set of words to choose from at any moment. The game would then be to choose which word to type next to move you in the direction you want to go...
-- Greg