Predecessor to Descent and based on the very succesfull computer game. It is a very thematic tactical battle game with great components. An interest in the Doom (or at least Sci-fi) theme is needed to fully appreciate the game.
I've been playing this for the last several years and it never seems to get old. Last night I had a very intense game on the 3rd map as the marines, and finally destroyed the cyberdemon while only have 3 HP left, and never got fragged once!