Mahjong Big is a game of strategic tile placement. Players sit around a virtual table, laying down tiles to create sets and runs of matching numbers and suit symbols. The goal is to be the first to empty their hand by forming valid combinations of tiles.
The player's hand is presented as a grid, with new tiles drawn and revealed individually. As the player places tiles, the display updates to show the current state of their hand and the table. The game requires a combination of short-term memory for tracking tiles and long-term strategy for planning sets and runs.
The game is played entirely within a web browser, without the need for download or registration. Players can jump in and out of matches at their leisure, with the game state saved between sessions.