A strange little side quest
One reason puzzles keeps producing good game ideas around Skeletons and Skulls is that its history is full of strange turns. Alexey Pajitnov created Tetris in 1984 after drawing inspiration from pentomino puzzles, then simplified the idea around shapes made from four squares. And then there is this: Women's boxing made its Olympic debut at London 2012. It is a good reminder that simple game mechanics can carry a surprising amount of history.