Darby's Crazy Town
A very abridged version of the '5 keys to beat the game' concept done well. It's fun and can be beaten in under 30 minutes if you know what you're doing (and are lucky with some conveyors and sharks-especially the conveyors). The brevity and simplicity belie some pretty sound design (bar the conveyors and sharks) and it's easy to see why this was a contest winner for ZZT's Revenge. The graphics are not bad for the time, either (the photo lab in the shape of a camera is a nice touch).
Dave Bishop would expand this game in 1996, but that is more of a mixed bag than this one.
Darby's Crazy Town follows the premise of many of the older ZZT games, Find the 5 purple keys. It's easier than Town excluding this one particularly devious puzzle. The graphics are non-stk but still the programmer tries for a bit of texture and a few 3-d effects. Fun and easily beatable in about 10-15 minutes.