I wouldn't call this a game: besides poor implementation, it features no challenges at all. You have 3 doors, and can only open one. If you can figure out what direction that door is, you can walk in it and obtain a key, which opens the other door, etc.
The game is finishable in 12 completely obvious moves, and the writing could use an editor. (The initial sequence with the man is the prime example of editing needs.)
I would encourage the authors to revisit this concept and flesh it out--the basic premise could make for an interesting game, but it would need some sort of tension and better technical implementation.