As Mathbrush said:
"This game is essentially one of the coding examples from the Inform manual. It consists of two rooms, one with a locked door and a key. There are no real surprises; decompiling shows no hidden content.
The game is polished, but is not descriptive, has little interactivity, low emotional impact, and I wouldn't really play again. According to my rating system, it's 1 star."
Additionally I have to say that there is no command to go through that door, there aren't also any cardinal directions available.
Try to create a bit more inmersive games although these will be short ones.