I can tell why this game was as popular as it was in its day, and for what it's worth, it still holds up as a playable game, as long as you've read the manuel of course. However, issues crop up almost immediately; bad pathfinding, hitscan enemies, bad ai escorts, broken missions scripts and other little details that show this games age. Having said that, it's a classic for a reason and definitely worth a few bucks if you have the patience for this sort of game.