Future Vs. Fantasy
This was one of the first mods to incorporate classes rather than use the standard Quake Soldier model. As the mod name implies, the classes were split into two genres: Future (Cyborg, Android, Sniper, etc.) and Fantasy (Mage, Cleric, Monk, etc.). Outside the typical deathmatch mode, Future Vs. Fantasy offered new modes of play, including Purge, a two-team battle with CTF elements, and Quest, a co-op mode where classes team up to fight "tougher than usual" monsters.
"FvF was this cool game idea that I always wanted to make, where the diametrically opposed forces of magic or the supernatural were perpetually in conflict with the forces of science or nature. It was a little of an analogy of how people saw the world," said the mod's creator. "I imagined it was what would happen if magic was real, but using magic excluded you from using scientific technology. It was all wrapped up in a class system so you could be a specific generic archetype from fantasy or sci-fi. The mod was generally asking 'what if aliens invaded a Fantasy planet?' although I think the setting was never actually defined."
The team went on to create the retail stand-alone game Purge in 2003, published by Tri Synergy, while staying true to the first-person shooter and role-playing game hybrid theme. The game eventually became free to download and play, changing its name to Purge Jihad and then finally to Purge Final.