A strange little side quest
Etherena Beta belongs to a much longer story of play than a browser tab might suggest. 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. There is another connection worth keeping in the same mental pocket: Spacewar! appeared on MIT's PDP-1 in 1962 and became one of the earliest influential computer games shared among programmers. That history is one reason familiar mechanics can still feel new when they are recombined well.
