Demon's souls - It started the "souls like" trend that we saw after with Dark souls,dragon dogma,lords of the fallen and bloodborne.
Heavy Rain - it started the interactive "make your choice" movie like "game" trend that we saw with Telltale and quantic dream games.
Mass Effect - It proved that a WRPG didn't have to be a lord of the rings wannabe to be good or acceptable.Too bad the sequels abandoned the RPG elements.
Uncharted - It started the Third person "cinematic" action that we saw with games like TLOU,tomb raider and Resident evil 6.
God of war HD - It started the trend of making HD ports.







