Mugen Sweeper

Mugen Sweeper expands the Minesweeper board inward and outward: zooming into the inner board reveals more board, and portals connect different parts of it. You uncover squares while using numbers to work out where mines are.

Portals and boards

One or more blue portals connect to a red portal. Zooming into a blue portal brings you out of the red portal, but not the other way around: zooming into a red portal brings you out of a red portal. The board continues further inward as you zoom in.

Rules and clues

The first square you click is always safe. Adjacent squares are not guaranteed to be safe, since doing so could create an extremely uneven distribution of mines. The game does not include chording, which would open all other safe squares around a square once flags mark all its surrounding mines.

You can choose between two number styles. Normal numbers show the number of mines in the surrounding area; subtraction numbers show the number of surrounding mines minus the number of surrounding flags. The subtraction style simplifies play and is recommended for beginners, but it drastically reduces the difficulty and is intended only for levels that cannot otherwise be cleared.