S.T.A.L.K.E.R.: Shadow of Chernobyl

In 23 libraries here. 10 launched it, and the typical player put in 0.6 h.

The main story is about 8 evenings of two hours, or 12 with the extras.

Named in 0.5% of Name 100 runs, about 1 in 211: people remember it when asked to name 100 games from memory.