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The Club is a games club at the Hinamizawa school led by Mion Sonozaki. Club members participate in various competitive activities, mainly board and card games, where the loser has to undergo an often embarrassing penalty game. It has no official name and is simply referred to as "the club".
Aim only for first place! ...Going at it half-assed just because 'it's a game' is not allowed!
For that reason, you are obligated to make all possible efforts!
You must partake in the game, enjoying it without question!!!
You cannot refuse any penalty!!!
The rules of the club permit and encourage the use of underhanded tactics in order to secure victory. Such tactics include but are not limited to: secret agreements, memorization of card markings, and preparation of resources beforehand. Cheating however should not be blatant, and a club member with solid evidence is allowed to call out another club member for cheating, which disqualifies the latter.
Note that rules 4 to 6 have not been mentioned as of yet. The rules themselves don't seem to be properly codified and seem as if they were made up on the spot, at least in their wording.
Club members are required to be residents of Hinamizawa. Mion sometimes makes new members play one of the games against them as an initiation ritual for the new member to prove themselves. She skips over this requirement for Tomitake and also recognizes him as an honorary citizen of Hinamizawa so that he can join their club activities during the Watanagashi Festival.
Other people may also participate in the club activities, as is the case with many club activities that take place during school hours. They however may not officially participate or benefit from the penalty games that the club plays. The help of non-club members is sometimes used by Keiichi or other club members in order to turn the tide of the game in their favor.
Old Bachelor is a variant of the classic card game Old Maid (ババ抜き,baba-nuki). Participants play with an evenly split deck of cards and take turns drawing unknown cards from their opponents' hands in order to find matching pairs with their own cards. Each matched pair is discarded openly, and the objective of the game is to clear your hand of cards. The catch is that one of the cards, referred to as the "old maid/old bachelor" has no pair, and players have to avoid being stuck with that card by having another player draw it. The strategic element comes with trying to read the facial expressions of your opponents. Unlike in Old Maid, where a joker is added to the deck as the unpairable card, Old Bachelor involves a random card being taken out of the deck at the start of the game.
Soon after the game starts, Keiichi realizes that his poor performance is due to the ability of the other club members to identify the cards by their marks and scratches, which they had memorized beforehand. While he starts off losing badly, he manages to make a comeback with his own strategies of reading changes in his opponents' expressions as well as making new marks on the cards to cause them to be misidentified.
Despite the fact that he would still lose overall, Mion offers Keiichi a duel to allow him to trade first and last place with her if he wins. She holds one card in each hand and has Keiichi attempt to guess the joker. Keiichi figures out that the left card is the Seven of Clubs, but overthinks the situation by guessing that Mion had hidden the joker behind that card. Mion had gambled on Keiichi making this move, and despite his loss, she is impressed by his performance and accepts him as a member of the club.
Winner: Mion Sonozaki
Loser: Keiichi Maebara
Mion doodles on Keiichi's face with a felt-tip marker and makes him walk home in that state.
The game starts with one player as the "zombie". Any player that a zombie manages to tag (touch) will also become a zombie. The objective is to evade being tagged before the bell rings.
The club members decide on the first zombie by asking each other questions on foreign word meanings. Satoko loses and has to answer a riddle before she can start chasing them.
Realizing that Satoko is using her classmates to help her find him, Keiichi also takes advantage of this and starts telling his classmates to spread false information beneficial to him while hiding on the roof of a shed. Keiichi soon begins to hear increasingly bizarre rumors being spread about him in an attempt to bring him out of hiding.
Keiichi overhears Rika and Rena's voices and discovers that Mion has become a zombie, before witnessing Rika reveal that she too is a zombie and advance towards Rena. Rena spots Keiichi and calls out to him, grabbing the attention of Rika, Mion, and Satoko. He jumps off the roof but slips and is caught by Satoko and Rika.
Now a zombie, Keiichi closes in on Rena, but is caught off guard when she makes a statement that arouses him, causing him to freeze long enough for the bell to ring. At the end of the game, Mion reveals that she had only been pretending to be a zombie, and thus won with Rena.
Find a black marker located somewhere in the school. A special rule is added where if Keiichi wins, he can use it to draw on Mion's face as payback for the card game,
Keiichi searches several lockers but finds nothing. He realizes that because he's new and Mion won't let him win so easily, she must have hid it somewhere he wouldn't know about. He goes into the school's storage warehouse and encounters Rena, and the two stand off before Satoko and Rika suddenly emerge.
The marker is lying in the middle of the floor, which Satoko and Rika run towards. Rika reaches out for it but Satoko activates a trap and buries Rika in metal pans. Satoko picks up the marker and claims victory.
While this club game doesn't have an official punishment, Rika gives Satoko a wrapped gift box which turns out to be a boxing glove trap. Satoko hits a button on the box and is sent flying when the glove bursts out, stamping a red K.O. on her face.
In zombie tag, Keiichi asks a classmate to tell Satoko that her parents are at the gate to trick her into running into Mion. Unknown to him and the reader, Satoko's parents had actually died three years prior.