I like that a lot of PC games support modding. I am no graphical artist (I suck at art in general) I do greatly enjoy the work that many people bring to the table to make games look even better. Then there are those buggy as hell games like Fallout and Skyrim where the community works together to make comprehensive patches. Lots of custom maps for multiplayer as well. These things all keep great games alive and forms a sense of community over the long haul for some games.