Shichinarabe - Sevens

七並べ (shichinarabe) — Sevens as it is played in Japan. Lay the 7s, then build each suit up and down from them; three passes, and the fourth puts you out. Play against the computer, offline too. In English or Japanese: the app follows your phone.

THE JAPANESE RULES
Checked against 33 Japanese rule sources and 13 apps: the holder of the ♦7 starts, three passes (passing on purpose allowed), out when you can neither play nor pass — your hand goes on the board, and those cards open nothing until the run from the 7 reaches them.

HOUSE RULES, YOUR WAY
Jokers (0–2, played alone or paired, finishing on a joker), A–K link or tunnel, 0–5 or unlimited passes, no passing on purpose, who starts, the 7s laid before the deal. The rules in force always show at the top of the table.

PROVABLY FAIR DEALS
A code before the deal, the key after: replaying the key gives the same hands, so the deal was fixed before anyone saw a card. The computer never sees your cards; each computer player plays for itself.

THREE LEVELS, A DAILY GAME, A RANK TO CLIMB
Easy, Normal and Hard (Hard reads the table and blocks with its passes). One daily game with the same cards for everyone and its own rule each weekday, a stamp book, and a rank from 10 kyu to Meijin and on without end (Eternal Meijin at the fifth Meijin term), with a rating and 63 titles.

Ads: no full-screen ad during a game — now and then one when a game ends (at most one in two games); banners on the start screen and, on tall screens, above the table. Muted when your phone is on silent. Take-backs and a missed day's game are offered with an optional video. Remove all ads with a one-time purchase.

No account, no login.

Recent changes:
• With 2 jokers played alone and finishing on a joker, a game now ends as soon as every card is down and only jokers are left (with unlimited passes it could go on for ever)
• "Lay out the sevens before dealing" now says when hands come out even
Feedback: boonyboonapp@gmail.com