This app uses TogetherJS for online multiplayer. If you want to play against someone, click the button below. TogetherJS will then give you a link to invite another player and wait for them to join. (If you click any of the cells before the other player joins, your computers will end up out of sync.) You will get a notification when the other player joins. You can change your display name after TogetherJS starts.

If you want to play in local multiplayer mode, ignore everything in the paragraph above.