A strange little side quest
If Granny Christmas Nightmare sends you down a curiosity rabbit hole, start here. 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: Early computer role-playing games helped turn rules, inventories, exploration and character progression into systems that could support long-form digital adventures. It is a good reminder that simple game mechanics can carry a surprising amount of history.