This is without doubt the best 3d shooter ever made. It is rare that a game be made with no flaws. I'm a real hard person to impress. This game has the highest replay ever in a game. The best movement. The best graphics (for its time). This game equals instant addiction. The game play is in my opinion second to none. The level design was way ahead of its time. The hidden places, the enemy's that sneak out just when you think your safe. The arsenal of weapons is just unreal. On top of that there are a few mods out there that will enhance the graphics even more. So if you finish this game as is get the mods and its like playing a whole new descent game again. Add to that the more then hundreds of levels you can find online for free. For the price you just can't go wrong. If thats not enough you get both descent 1 & 2.