COLLECTORS ONLY! I gather from the Steam page that the server on this game is OFF, and that the game CAN NOT BE PLAYED. If that sort of thing hits your happy spot, get in there. If you actually want to play this game, it looks like you're out of luck.

The dev apparently has not participated in game support in quite some time, so if the key doesn't work there will not be anything I can do to help out. The key is fresh, but who knows what the state of game keys might be in the Steam database.