I must say that DN 3D was and still is one of the best FPS out there. I have played this game over and over again. Now that it is playable in (Dos Box) Windows XP (and up) it keeps the legend going on and on. This game was so great for people who were able to use the level editor to create maps and mods. The engine was also used in so many games after wards. Now that I installed the HRP, the game is even that much better.
Trust me, if you haven't played this game yet... GET IT, you won't be disappointed.
Thank you GOG for adding another great game to the collection.