Blast Doors

Blast Doors - description from Softdepia.com:

Blast Doors was originally designed for the Total Entertainment Network. Unfortunately, the game networks are discovering that their profit margins are smaller than they had hoped. As a consequence BD got dumped when bigger games like Diablo and Quake came down the pike.

Blast Doors is a "Free to try" program. You can download and try it for an evaluation period.