This was I game I could always play either with my brother, or cousins, or friends. The simplicity in visuals, and the polish of the gameplay really brought an amazing charm to this game. Trying out different characters, learning their abilities, and battling waves of enemies (with help from friends and NPCs) was truly amazing.
Add to that the modding scene, and the game lived well past its prime.
Considering there is a remake in the oven, I'd love to see either one released on GOG.