Overview

Gameplay
Mario Party DS' gameplay is similar to that of other Mario Party games, but with obvious differences due to the Nintendo DS' inferior hardware and unique capabilities. All minigames are obviously controlled via the Nintendo DS touch screen, microphone (there is an option to turn off these minigames), and face buttons. The game has eight playable characters: Mario, Luigi, Princess Peach, Yoshi, Princess Daisy, Toad, Wario, and Waluigi.The game is played on a large game board, of which there are five (Wiggler's Garden, Toadette's Music Room, DK's Stone Statue, Kamek's Library, and Bowser's Pinball Machine). Each character gets to move an amount of spaces around the board (depending on what number they roll on the Dice Block), and landing on certain space triggers different things. Red and blue spaces alter the amount off coins the player receives (or loses), ? spaces trigger certain effects depending on the stage, and mole shop spaces allow the player to purchase items.
Mario Party DS includes a new puzzle mode as well, in which the player can do various puzzle games from previous Mario Party games. Included puzzles are Mario's Puzzle Party (Mario Party 3), Bob-Omb Breakers (Mario Party 4), Piece Out (Mario Party 5), Block Star (Mario Party 6), Stick and Spin (Mario Party 7), and Triangle Twisters (which is unique to Mario Party DS).

Story

Bowser's party invitation also gets into Donkey Kong's hands. DK races off to Bowser's Castle to get first crack at the snacks. Who can resist? Free eats can't be beat! The Mario crew also goes to the bash. Is it too good to be true? Of course! A cage falls over Mario and the rest of the gang and Bowser reveals himself and a mysterious staff. "Bwahaha! You fell for one of my traps AGAIN? Now gimme that Sky Crystal! See my Minimizer here? Guess what it does! It shrinks you all down to size!" Just then Bowser shrinks all of the Mario Crew! "Bwahaha! Your Sky Crystal is mine! Now all I need are the other four! Kamek, I'm done with these peewees. Give 'em the boot!"
Shrunken down! Flung far away! It's a complete mess for the Mario crew! The miniheros pick themselves up and look at the megaworld around them. But there's no time for sight seeing! Not when there's work to be done! Our heroes must find the other Sky Crystals, beat Bowser, and return to normal! The entire Mario crew leap into action! They all want to be the one who saves the day! Even the best of friends can be fierce rivals when it comes to being a heroic Superstar! And so our tiny heroes set out on their big adventure to bring down Bowser.
Throughout the story, Mario and the crew began their journey to search for the other 4 Sky Crystals and the 5th one is located at Bowser's Castle, where the final battle takes place. At the end of the story, the gang returned to normal to face off against Bowser and get the last crystal but when Bowser is defeated, the final scenes of the story goes like this: "Aw, phooey! This stinks!" Just then the 5th Sky Crystal appeared. "NOOO! Not my Sky Crystal!"

Bowser then said: "Bah! How can a bunch of pathetic peewees get all of the Sky Crystals?! Gah!... gather the sky's crystals... to reveal an incredibly fun challenge... That's the ol' legend is here at the castle! And i was getting it all for myself. Until you guys wrecked my plans. Whuzzat? You want me to play WITH you?... What a bunch of weirdos you are. If you're going to beg a big shot like me... how can I say no?"

Just then, DK and Diddy Kong ate all of the food that Bowser had left earlier in the game and the story ends.