opening NDU works, but you can't pause
I've only been able to run Corner as a custom map
(I had to turn on retro, scale down textures, and simple particals, and turn off dithering... not sure if it caused ti to work, as I also was messing around with system setting at the time)
and when I tried Facility, I got the "top of the screen tip" of "isn't it weird how Naievils map always crash" right as it crashed...
In general: doesn't "work" on PSP-1000, you should probs get to work on that