Warhammer 40,000: Gladius - Relics of War

In 62 libraries here. 9 launched it, and the typical player put in 0.6 h.

The main story is about 6 evenings of two hours, or 12 with the extras.

Named in 0.5% of Name 100 runs, about 1 in 187: people remember it when asked to name 100 games from memory.