The concept of a "dungeon" really seems to be in stark contrast with the scale of the world presented in Mass Effect. Actually, make that worlds. Once the central story kicks off, you're placed in command of your own ship and set loose upon a galaxy filled with multiple planets. If you find one you'd like to explore, you can drop off an armored vehicle and rove about, taking in the local sights before promptly blasting them to smithereens. Bioware made specific mention of downloadable content, stating that Xbox 360 gamers would be able to eventually download entire new planets to explore, some with independent story arcs and more unique sets of challenges.
When it comes down to combat, the game is a mixture of traditional RPG statistics and third-person tactical shooting (think Ghost Recon). You can control any of the three members of your squad directly, but just like KOTOR, the two you don't control can often handle themselves well enough The action can be paused at any moment, allowing you to move the camera about the area and place 3D waypoints for your squad mates to converge on. The Bioware guy controlling the demonstration placed waypoints behind some nasty alien fellows and in doing so, allowed two of his characters to flank them. It was an effective strategy, though having everybody equipped with gigantic, heavily modified weapons may have swayed the outcome just a bit.
Even though your character's class, abilities and statistics determine how effective he (or she) is at taking down the alien menace, the combat still requires a good deal of input from you. Largely thanks to the game's stunning visuals and sound, firing off guns and lobbing grenades really seems like a very visceral experience, regardless of all the dice being rolled deep within the Xbox 360's processors. We'd like to experience some more of the combat first-hand before venturing any further opinions, but based solely on presentation, the combat seems to be the gun-toting equivalent of Jade Empire. As far as we're concerned, that's a good thing.