Goal: be first to complete a hand of
4 sets + 1 pair (or 7 pairs). Sets are triplets (pung), four-of-a-kind (kong), or runs of 3 in one suit (chow).
Your turn: a tile is drawn for you automatically - tap one of your tiles twice to discard it.
Claiming discards: when someone discards, you can claim it to complete a
Win,
Kong, or
Pung. The next player in line can also
Chow (complete a run). Win beats pung/kong beats chow. If you don't want it, tap
Pass.
Tiles:
万 = characters, 条 = bamboo, 筒 = dots (1-9 each). 东南西北 = winds, 中發白 = dragons. Honors can't form runs.
Dealer (东) starts and keeps the seat after a win or draw; otherwise it rotates. Empty seats are bots. If a friend leaves mid-hand, a bot plays their seat until they rejoin on the same device.
Rooms: anyone with the link can watch; between hands they can take over a bot's seat.