Word Shoot is reminiscent of Crimsonland's typing mode. Enemies advance at you and, in order to shoot them down, you have the type in the wordsthat show up below them. It's an excellent exercise for fast typing, not to mention a great way to get RSI.
Something's really screwed up with the high score system though; I scored 69,700 on my second game (hard difficulty, 9 missed words - at least 3 of which were because of overlapping enemies). I'm a fairly fast typist, and while I have no problem accepting the concept of people typing faster and/or more accurately than I do, still - 358,620 does not seem to me like an attainable score. I'll give it a couple more tries before I get back to work (we have a regularly scheduled flame throwing every Sunday. And no, I can't remember where that joke comes from).