Vicarious Visions Marvel trilogy (2004,2005,2006)

[champro]

All three of the Vicarious Visions Alchemy engine games were good coop. Also developed by Raven Software.

X-Men Legends for the Xbox, PS2, Gamecube
released September 24th, 2004

X-Men Legends II: Rise of Apocalypse for the PC, Xbox, PS2, Gamecube
released September 20th, 2005

Marvel: Ultimate Alliance for the XBox, PS2, PS3, Wii
released October 24th, 2006

All three games follow a linear story line and have overall 4 player coop (with some early parts of the story having less players).