I'm currently playing Zenonia on my phone and 999: 9 hours, 9 persons, 9 doors on DS. Zenonia is pretty mindless but entertaining. Lots of 'fetch me a bucket,' some generally fast grinding, and the occasional syntax mess-up in the text (your/you're sort of things). Feels lo-fi in a fun sort of way. 999 is excellent, although I have so little patience for puzzles that I sometimes wish I could just skip them and play through the rest of the story, which would be kind of like a choose-your-own-adventure. The story is really good, though. I'm impressed that something cartoonie on a DS can make me feel so unsettled while playing it.