Well, my first instinct on the design puzzle was something among the lines of http://xkcd.com/149/
I was a little surprised to get a "no such command" error, especially after finding out the actual solution...
The aesthetics does not make for easy reading. Never was interested in text adventures in the first place but the blurriness made me quit the game faster than I would have.
Nice idea, but can you allow folks to turn off the fake flickering/display faults. It's hugely distracting. Also the CGA style font is kinda hard to read, perhaps you could allow folks to:
- change the font
- adjust the brightness and contrast
Back in the day when I was a mini-computer engineer our terminal screens were much nicer and crisp.