Kyabetsu Kantei

User summary
キャベツ鑑定 (Kyabetsu Kantei) in English is Cabbage Appraisal.

Cabbage Appraisal is card game where players bid for the right to appraise opponents' cabbages.

At beginning of the game, each player has 200 coins and the same deck of five cabbage cards, each of which is numbered -30, -20, -10, +10, or +20, indicating the quality of the cabbage.

Each round, players take a random cabbage card from the deck, and place it on the table face-down. Only the player who placed the card may look at its face value. Then they bid for the right to appraise opponents' cabbages.

The appraiser (highest bidder) may reveal an opponent's card. If its value is negative, the appraiser takes that many coins from that opponent as a fine for distributing bad cabbages. If positive, the appraiser must pay the opponent that many. The appraiser may repeat revealing until +20 is revealed or they wish to stop.

After the tenth round, when the deck runs out twice, the player with the most coins win the game.

Description from the publisher:
『キャベツ鑑定』はルールの簡単な「競りゲーム」です。
キャベツ農家になって、ガッポリお金を稼ぎましょう！　ただし、あなたが市場に出荷するキャベツは、良いものばかりとは限りません。
悪いキャベツを出荷したことが分かったら、罰金を払わなくてはなりません！
上手くキャベツを売り抜けるのはどのプレイヤーになるのでしょうか？

・ルール
ゲームは10ラウンド行ないます。各ラウンド、キャベツの鑑定権を競ってください。10ラウンド目が終了した時点で、一番多くコインを持っているプレイヤーが勝利者です。