A strange little side quest
Zoom out from Turret Shooter for a moment and the timeline gets surprisingly deep. The word 'checkmate' is linked to the Persian expression 'shah mat', used when the king was trapped. A second detail makes the picture even better: Nintendo's Donkey Kong arrived in 1981 and introduced the character first known as Jumpman, who later became Mario. Not bad for a few facts hiding behind a Play button.