ANYTHING NICE: System Shock 2
The first enemy you encounter cries out:
"They see you. Run. Run!"
That's a lot of implied backstory in just five words.
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'Anything Nice' is is a series of very short posts highlighting things I liked about the treatment of narrative in other people's games. It's a deliberately magpie, grab-bag approach. Some of these games I adore, some I don't even like, but I learnt from all of them.