Yakuman DS

Yakuman DS is a game for the Nintendo DS produced by Nintendo and released in 2005. It features various Super Mario characters. In 2006, Nintendo re-released the game with an added online mode, under the name of Wi-Fi Taiō Yakuman DS. The game is named after the rare winning hands called yakuman (役満) that are worth 32000 points (48000 if east/dealer).

Opponents
The difficulty of each opponent is shown in the game with Stars; the more Stars that an opponent has, the more challenging they are to face as an opponent. Every opponent has different stats of Attack (effort on winning the hand), Luck, Skill (good strategy), Speed (speed on declaring ron (ロン) or tsumo (ツモ), and Defense (effort on preventing others to win). They all have different AI, and their style of play is described briefly behind the character's picture in the upper screen (while in the character selection screen). Due to Yakuman DS only releasing in Japanese, the descriptions are roughly translated to English here. The opponents are:

Unlockable
The character the player has chosen will not be available as an opponent.

Other characters

 * Lakitu: Hosts the tutorial mode of the game and provides in-game hints and advice.

Play modes

 * Free mode: In free mode, the player can freely choose CPU opponents to play against. The players can use their own rules.
 * Challenge mode: Win by fulfilling a given set of conditions with a given set of opponents. Easy, normal, hard and expert challenges are available, with Wario and Waluigi being unlocked after completing all the Easy challenges, Petey Piranha unlocked after completing all the normal ones, Bowser unlocked after completing all the hard ones and Toadsworth unlocked after completing all the expert ones.
 * Ranking mode: The character chosen starts at rank 20. They play against the other characters to ascend and possibly become rank 1 (top 3 opponents are Petey Piranha, Bowser, and Toadsworth in ascending order). Note that the ranking system works by winning points from beating other players; thus, the top opponents do not need to be unlocked in order to ascend above them.
 * Local multiplayer: A game for multiple players (up to 4), all within range of the DS's wireless communication system. DS Download Play is available.
 * Online multiplayer: Like online multiplayer for other DS games, with the same Friend Code system. Voice chat is available through the Nintendo DS microphone. After the discontinuation of Nintendo Wi-Fi Connection, this mode is no longer functional.

References to other games

 * Mario Kart: Double Dash!! - Most of the characters' voices are taken from this game.

References in later games

 * Super Smash Bros. Brawl - Yakuman DS is mentioned in Toadsworth's trophy.

Quotes

 * "I'm-a surprise myself." - Luigi after forced to lose some points after a round; taken from Mario Kart: Double Dash!!.
 * "I can't believe I lost!" - Princess Peach