A strange little side quest
If Urban Counter Terrorist Warfare sends you down a curiosity rabbit hole, start here. Gun Fight reached arcades in 1975 and became the first arcade video game to use a microprocessor. It also connects to a different milestone: Computer Space reached arcades in 1971 and became one of the earliest commercial electronic arcade games, even though its controls proved demanding for many players. The details change, but the appeal of learning a system and trying again is remarkably persistent.