Hot on the heels of its outstanding new real-time strategy game Company of Heroes, experienced developer Relic is back with the second expansion to its excellent 2004 game Warhammer 40,000: Dawn of War, and it's a great update. Dark Crusade introduces two interesting and powerful new factions to Dawn of War, raising the total number of different playable armies to a whopping seven. It also features a new strategic campaign structure that lets you direct any of these seven sides in a massive war for planetary supremacy, with shades of the classic board game Risk. Some new units for the returning factions and plenty of new skirmish maps are also included, and you don't even need to own Dawn of War or its first expansion pack to enjoy most of this (you only need the previous games to unlock the older factions specifically for use in multiplayer matches; you have access to every race when playing solo). What with all that it has to offer, Dark Crusade comes across as much more than your typical real-time strategy expansion pack. It's one of the best RTS games around strictly on its own merits.