Mammoet in TES V: Skyrim

The improved Radiant AI technology is also more aware of how a citizen should react to your actions. As you perform tasks for them or terrorize them by ransacking their home, the NPCs develop feelings about you. If you're good friends with a particular NPC and barge into his house during the middle of the night, he may offer you lodging rather than demand you leave the premises. Your friend would let you eat the apple in his house, Howard says. If you swing your weapon near an NPC, knock items off their dinner table, or try to steal something of value, they'll react with an appropriate level of hostility given their prior relationship to you.

Traditionally in an assassination quest, we would pick someone of interest and have you assassinate them, Howard says. Now there is a template for an assassination mission and the game can conditionalize all the roles - where it happens, under what conditions does it take place, who wants someone assassinated, and who they want assassinated. All this can be generated based on where the character is, who he's met. They can conditionalize that someone who you've done a quest for before wants someone assassinated, and the target could be someone with whom you've spent a lot of time before.