Shanghai Mahjong Free is an Android puzzle game developed by zinine. It is a classic game of Mahjong where the player has to pick tiles that are not blocked by any other tiles on top or on either side. The game offers three different modes: Quest, Time challenge, and Round challenge.

In addition, players can compete with other users from around the world through the record competition feature. There are five maps to choose from, each with its own unique challenges. The game also provides three different tile pictures to select from and five hints and six shuffles to help players progress through the game.