The final three Halo 3 multiplayer maps from Halo 3: ODST make their standalone debut on Marketplace. If youve yet to complete the Halo 3 multiplayer set, heres your chance. Heretic returns players to familiar ground, Halo 2s Midship, while Citadel forces small squads to stay in constant communication and Longshores multitude of industrial buildings, elevated walks, and open inlets conspire to create a complex battleground tailored for multiple combat scenarios.