Single player was only the beginning (Although they did have Nox Quest later).
That was one of the best online battle-arena style games I have ever played even to this day. The ladder system was awesome. Games were fast paced, you could pop in and out as you pleased
When I found the web port, I had to immediately host my own multiplayer games so I could reminisce on the maps that have only been memories for 15+ years. Some of the best gaming of my childhood happened on that mini-mine deathmatch map and those larger CTF maps.
I loved how different the classes were. CTF maps were all sorts of chaos, all these little battles happening all over the place. Stone fists falling from the sky, warriors randomly charging through choke points, wizards spawning walls and annoying teleportation traps, the devious chuckle of an ember demon, the foreboding gong-chimes of Force of Nature spam, and the satisfaction of a Death Ray one-shot.