been seeing a lot of these go around so heres mine. first is skill needed to play for the first time and the second is how hard they are to "master" (or at least, play effectively)

Amir Timur found ordinary chess too easy, so he invented his own variant, “Great Chess” (شطرنج الكبير). It was played on a massive 10×11 board with 28 pieces per side, including camels, giraffes, elephants, and war engines, each with unique moves.