After completing Level 33, players will unlock the ability to collect alternate Tilesets to change the looks of the Board as they play through Levels.Tileset Pieces are collected by playing through Tileset Levels, found on the Events screen. You can play up to three Tileset Levels per day, with one attempt to complete each. Additional rewards are given for successfully completing all three Levels. It is also possible to reset the skip the cooldown to play the Tileset Levels by spending Coins.
Mahjong City Tours GUIDE