I had a bit of a problem getting Desolate to run properly in Mirage OS -- turns out there's an issue with Omnicalc's font sets. Apparently, if you've got a font set installed and/or unarchived on your calc, Desolate will not run. Sometimes, the program will refuse to run, in which case I just unarchive it, run it, then archive it again.
A great game, and it's pretty amazing that the author could fit that much stuff into such a small package...
I haven't gotten very far in the game yet, because I can't find the level 4 access code or figure out the life-support data disk (!). However, from what I've seen so far, it's pretty good. The controls are a bit frustrating until you learn them, but once you do, playing is a breeze. The storyline seems very good so far, and, speedwise, it's pretty smooth on my TI-83+SE.
I have no major complaints, except that my friend's TI-84+SE glitches sometimes - the graphics become squeezed to the left of the screen and refuse to fix themselves until Mirage OS is exited. And the AI, as mentioned before, it a bit 'flitty,' but that's not really a problem. Most average gamers wouldn't notice that.
This program implemented grayscale graphics to their best - the best I've ever seen, in fact. Since I'm trying to get into game programming, I can truly say I'd learn a lot by studying this game's code (if it was accessible).
Ease of use: 9/10
Speed: 9/10 (takes a long time to start up/exit)
Overall: 9/10 - an excellent game and a must-have for everyone who has a TI-83+SE or TI-84!