Call of Duty: Modern Warfare 2

In 5 libraries here. 1 launched it, and the typical player put in 15 h. 1 finished it.

The main story is about 3 evenings of two hours, or 5 with the extras.

Named in 7.3% of Name 100 runs, about 1 in 14: people remember it when asked to name 100 games from memory.