My turn to chime in. Much like other people I enjoy this type of game. And like the others I also found it to be flawed. here is my list of issues. Some may be repeats:
1. Commands - probably the biggest issue is the commands. even if a command is on you command list unless it is the 'right' command the game does nothing. If you insist on having a command list you should always be able to perform any action (physical limitations permitting). Also when you have a very limited command variation you should list the exact commands (even if you do have easter egg commands). The player can get stuck very easily if they have to search for the words you want.
2. Pressing enter does not input the command, this is annoying.
3. Every time you enter a command you have to re-select the text box. This gets annoying very quickly.
4. The music although good and appropriate does go away quickly never to return.
I think the game has a long way to go, and you really should listen to peoples reviews because it could be fun. For those who are curious the way to get to level three is:
Enter doorway (level 1)
Climb box, climb down, enter doorway (level 2)
Lift door, enter doorway (level 3)
I am lost at level 4.