This is one of the most well-detailed games on this website. I had to update to Flash Player 10 to be able to play this game, but at least I have that out of the way now! The levels of difficulty are good, and this game has really created a big environment that gives its player plenty of space to move around, explore, and of course, shoot stuff. Truth be told, I never played "Doom" when I was a kid, but I am glad to be in an age where ordinary people can replicate and even update versions of their favorite video games. Thank you very much.