Yacht Progression
Starting with the classic game of Yacht you must beat each game once to unlock the next of 11 other games. All twelve games are variants of classic Yacht and are free-to-play once you have unlocked them. Some of the games you unlock will be very exotic, others downright weird.
No in-app purchases, just skill with dice.
Once unlocked a game remains unlocked so you can play it as often as you wish.