55RTSablewind is a vertical merge puzzle mobile game that turns four types of shore stones from a tidal treasure vault into high-tier treasures, then completes deliveries according to task lists. Players drag shore stones of the same type and rank on a 4×5 board to merge them; each successful merge drops a new fragment into an empty slot. As the score increases, more stone types gradually unlock. You need to merge the stones all the way to the fourth tier, then drag them to the delivery slots at the top. Filling the randomly assigned list for that round advances the task. The round ends when the board is full and no further merges are possible. You must plan your empty slots and balance between continuing merges and timely deliveries—easy to pick up, yet increasingly strategic as you progress.