No revenue estimate for GOG — its rating/review counts don't calibrate to sales the way Steam's do. The Steam version is estimated at $23.4K — a different platform, not this one.

Rise of the Triad: Dark War

Includes Extreme Rise of the Triad add-on pack that features 42 additional levels to play! You are part of an elite group of operatives called HUNT (High-risk United Nations Taskforce), and you must stop a maniac cult leader from killing millions of people. While scouting a remote island, you are suddenly surrounded by enemy troops with guns blaring. In the distance you see your boat - your only chance to escape - blown to matchsticks. In front of you is a huge fortress monastery, and your only chance to stop the madness. You are equipped with awesome, high-tech weaponry like heat-seeking missiles, split missiles and the Flamewall cannon, which leaves a trail of charred skeletons in its wake. It's your assignment to annihilate and destroy - to ensure peace on Earth. Experience the zany and overly brutal classic FPS action only a game from the 1990 can deliver!