How it plays
Minesweeper as you know it, except the field is shared: everyone in the room digs at the same board, and the first mine anyone hits ends the round for all of you.
- Dig. Open a square. A number says how many of the eight squares around it hide a mine; a square with none opens its neighbours too.
- Flag. Mark a square you think is mined, by right-clicking it or holding a finger on it. Flags belong to the room, so anyone can lift one.
- Chord. Click a number that already has that many flags around it to dig the rest of its neighbours at once.
- Clear. The field is cleared when every square without a mine is open. The first dig of a round is always safe.
What a room adds
- Any number of hands. Play alone or send the link round; whoever opens it can start digging straight away.
- Three sizes. Nine by nine with ten mines, sixteen by sixteen with forty, or thirty by sixteen with ninety-nine.
- Who cleared what. The room counts the squares each player opened, and the fields it has cleared and lost.
- A shared clock. Time runs from the first dig, the same for everyone.
It plays from the keyboard too, and on a phone, where the largest field scrolls sideways.