A strange little side quest
Zoom out from Sleepy Tower Defense for a moment and the timeline gets surprisingly deep. Chess changed dramatically in Europe during the 15th and 16th centuries when the queen became the board's most powerful piece. Another piece of context lands nicely beside it: 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.
