Dungeon Siege III might be the flashiest hack and slash RPG this generation. Every strike leaves a trail of light or an explosion on the ground.
It might not be clear from the video, but Dungeon Siege III has drop in and drop out cooperative play. Obsidian said the system supports two players, but left the door open for more. Something else not shown in this video that Square Enix demoed was you can knock enemies into each other… from far away. In a media demo, a staffer at Obsidian knocked a monster off a cliff like a golf ball and it hit another monster across the chiasm.
Dungeon Siege III comes out on PC, PlayStation 3, and Xbox 360 next year.