RetroOrder

RetroOrder is a vertical merge puzzle mobile game that combines drag-and-drop merging with task delivery mechanics. Players drag coastal treasures of the same type and level on a 5x4 tidal board, merging them in pairs to upgrade them step by step from basic to the highest tier. Each successful merge brings new tidal items into empty spaces, gradually filling the board and quickening the pace. Players must also check the random commissions in the delivery bar at the top, dragging the corresponding fully-upgraded treasures into the slots to complete submissions. When all slots are delivered, the next round of tidal tasks advances and bonus points are awarded. As scores rise, more types of treasures unlock, requiring advance planning of merge routes, space reservation, and delivery order. If the board has no empty spaces left, the round ends. Intuitive controls and easy to pick up, yet it holds plenty of strategy in merge order and spatial trade-offs.