A strange little side quest
The rules may be simple on screen, but the backstory around Rush Grotto is anything but tiny. Modern chess traces back to the Indian game chaturanga, recorded around the sixth century and built around pieces representing parts of an army. A second detail makes the picture even better: Boxing was part of the ancient Olympic Games by 688 BC, long before gloves, weight classes, or timed rounds existed in anything like their modern form. The details change, but the appeal of learning a system and trying again is remarkably persistent.