Classic. DOOM is truly a timeless game that's fun to play now 30 years after its release and it will be fun to play 30 years in the future. My main complaint is that it's very simple. Not many weapons, the levels just feel like a series of aritificial corridors and it doesn't do anything amazing, but it's just very fun to run around shooting demons and exploring these although basic, fun levels. Sprite work is amazing, enemy designs are good and the weapons look cool along with great gameplay.