Minigames/Anomalous & Unused Minigames

In some personalized copies of Super Mario 64 DS, anomalous minigames can appear. Most of them appear to be based on unused minigames that can be found referenced in the files of the game, with their only remnants being introductory text leftover in the data. However, some appear to be entirely unique, potentially created by the Personalization A.I. The most common way to unlock these is by finding the Purple Rabbit, or any color of rabbit associated with Waluigi, as a new playable character would need new minigames, finding extra rabbits for characters to unlock minigames that are equivalents of existing minigames, or by finding them in Luigi's Casino.

Silly Slides / Screwy Slides
"These tough slides are for experts of the Silly Slide. Guide all the characters to their destinations on the Touch Screen!"

No minigame named Silly Slides exists either. Howver, Mario's Slides and Connect the Characters had Silly Slides and Screwy Slides as their early names, so this is likely just an early version of said minigame. In reports of those who have played these minigames, it plays similarly to Snowball Salom, where you have to get the player down a slide level such as Princess' Secret Slide in a certain time frame, having to avoid falling into the void, with Screwy Slides containing obstacles such as Chuckyas blocking the player, similarly to the Super Secret Slide.

Super Shuffle Shell
"This mini-game gives you 5 shells! Recommended if you're confident in your ability."

This is a harder version of the Shuffle Shell minigame. Notably, Shuffle Shell gives you 5 Koopa shells normally, implying that the minigame was altered at some point after this text was written. However, in reports where Super Shuffle Shell can be found, the original minigame is lowered to have 2 or 3 shells, or Super Shuffle Shell gives 7 up to even 15 shells. Super Shuffle Shell can also reportedly have a smaller target, making it harder to gain points.

Psychic Sage
"Now that you're a psychic, you should be able to see through the cards."

This appears to be the same concept of Psyche Out. Notably, it says "Now that you're a psychic," meaning it might be a harder equivalent, similarly to other minigames. It also says "cards", implying there'd be more than one card you'd have to guess for. Those who have encountered this minigame say it was the same as Psyche Out, sometimes even replacing it, or that it was an easier version where the card was more translucent, or that it was harder due to having multiple cards you'd have to guess for.

Doom Box
"This mini-game is a lot more difficult than Boom Box. Listen hard and pick the matching sounds."

This is obviously a harder version of Boom Box. Those who have encountered it corroborate this idea, saying it has 10 chests or that it starts out with you having to match them based on which speakers the sound emits from, with even one mistake ending the minigame. Some have even said that, paralleling how Yoshi is pushing a box in Boom Box's background, Yoshi is laying on the floor next to a chest, seemingly having tried to push it and failed.

Luckiest Stars
"You're in luck to play this ”big or small” game. Now, beat Luigi and beat him often!"

This is also a harder version of Lucky Stars. In reports of people encountering this minigame, there are more cards at once to guess from, and even cards without any stars, instantly ending the game upon selecting them. This is the unused minigame most often seen in Luigi's Casino, likely due to it being a variant of one of Luigi's minigames that shows the casino in the background.

Snowball Swell
"Compete against time as you make the snowball as big as possible. Show off your dazzling stylus skills as you dodge rocks!"

This minigame appears to be a variant of Snowball Salom that is focused on size rather than distance. The "dazzling" line may be referencing Wow! Waluigi, as Super Mario 64 DS was meant to release alongside W!W, so they'd probably reference each other every so often. Notably, unlike every other minigame, this and Giant Snowball Salom would make Snowball Salom the only minigame with 2 other variants, as minigames at most have 1 variant in the final game. This may mean that this was an early Snowball Salom or was replaced by Giant Snowball Salom. Those that encounter this minigame say it is based on size as well, with the finish line disappearing and simply having the player race against time, with Spindrifts as an obstacle, likely due to it being another character seen in snowy environments, as Mr. Blizzard and penguins being seen in Snowball Salom and Giant Snowball Salom respectively.

Anomalous Minigames
''These minigames do not have any unused text associated with them, making them slightly less believable but simultaneously more interesting. Take these minigames with a grain of salt.''

Badly Wanted!
This minigame is a harder variant of Wanted!. More characters can appear, such as Waluigi, Princess Peach, Koopas, and Toads, and as the minigame progresses, you may need to find multiple of the same character at once, or even two different characters as well. This minigame is notable as some have said that playing Wanted! enough will reveal a Waluigi face that will unlock him upon being selected, and Waluigi's face can be found in this version of the minigame, even though it acts normally. This rumor may have been an offshoot of Badly Wanted!.

Sort and 'Scape
This minigame is a harder variant of Sort or 'Splode. You still have to sort Bob-ombs and Bob-omb Buddies, but also Chuckyas and in some cases even Motos. You have to sort a certain amount of them to blow up a wall or some other object, such as a big rock, trying to escape the area the minigame takes place in. Each carpet needs enough of the number shown to destroy the obstacle. You still get points for each enemy sorted. Some have even said Bullet Bills and Flame Chomps will fly over the map after a certain amount of levels, blowing up the enemy you're currently holding upon contact. Flame Chomps can also shoot fireballs that have the same behavior, but fly faster and can be dragged into Bullet Bills to destroy them.

War-io
War-io is a variant of the War board game played in Luigi's Casino. The player has to move units of Koopas, Goombas, and other enemies to conquer parts of the Mushroom Kingdom. You roll a die, and depending on the number, you can defeat the enemy's (Luigi's) soldiers and continue playing the game. One player starts at Princess Peach's Castle in one corner of the map, and the other starts with Bowser's castle on the opposite end. Once you conquer three fourths of the map, the game ends.

Mario's Game Gallery Games
Some have said that they've encountered the 5 minigames from Mario's Game Gallery (Checkers, Go Fish, Dominoes, Backgammon, and Yacht/Yahtzee) but played against Luigi in Luigi's Casino, typically exactly the same as seen in Mario's Game Gallery minus Mario's dialogue and with some assets altered, typically replacing random assets with other Mario-related objects.

Collapsing Coinage
Collapsing Coinage is a unique Wario minigame. Wario is collecting valuables in an underground mineshaft, or just a regular cave. Behind him, the ceiling is collapsing. The player can control Wario with the D-pad, though some say he runs automatically, and can press A to make him jump and B to make him shoulder bash, potentially referencing Wario's anomalous shoulder-bash ability, indicating it may have been removed for whatever reason. You consistently cannot jump and shoulder bash at the same time. There are pits in the ground Wario has to jump over, and rocks that Wario has to shoulder-bash through to continue. Coins, gems, Power Stars and other valuables are scattered throughout the track as Wario runs, with some saying Bob-ombs or Boos can appear that the player has to avoid or else they'll be slowed down. Goombas can also appear that have to be jumped on or shoulder bashed. The goal of the game is to get to the end and collect as many valuables as possible.

Notably, some have said there is a multiplayer version of Collapsing Coinage where up to 3 other players can play as Monty Moles and hang out on the top screen, attempting to throw rocks at the player from above and spawn other traps. However, they can also fall into pits and fall victim to traps, causing them to lose the minigame. At the end, some say Wario can find an elevator up to the top screen, giving the player full control of his movement, allowing them to fight the Monty Moles to fully end the minigame, though at that point the minigame has pretty much already been won.

New Super Mario Bros. Minigames
If the game is StarPass ed with New Super Mario Bros., it is believed that NSMB minigames that weren't in Super Mario 64 DS would be unlocked in the game, either automatically or with a new set of rabbits. Which minigames in specific would be included are unknown, but code in the game indicates that StarPass with NSMB would have altered the Rec Room in some way, likely adding the new minigames.