Symbiosis Conquest: Frontier Wars and Conquest2: Vyrium Uprising
The mod is well done, but I hadn't any chance to test it in online games, since nearly all servers are dead on Gameranger. The new perks, units and admiral flagships are a nice addition. AI is sadly incapable of using the new features introduced in the mod, but it's really good to see the community is still dedicated to this dated, yet awesome game.