Mario & Sonic at the Olympic Winter Games

Mario & Sonic at the Olympic Winter Games is a sports game for the Wii with a Nintendo DS version of the game released as well. Both games are a follow-up to Mario & Sonic at the Olympic Games. The game is produced under license from the International Olympic Committee in relation to the Olympic Winter Games taking place at Vancouver in 2010. Like the previous installment, this game is a collaboration between Sega and Nintendo featuring characters from both the Mario series and the Sonic the Hedgehog series.

Although Sega was handling most of the development for both versions of this game, as it did for the original Mario & Sonic at the Olympic Games, they were also handling publishing/marketing duties for all territories outside of Japan, while Nintendo has done publishing/marketing duties for Japan itself.

About
The Wii version employs the Wii Remote controls, as well as the Wii Balance Board. The game features a Festival mode where the player starts from the opening to the closing ceremony. In the Festival mode, the player can choose to play an individual festival, where the player faces off against 7 other CPU characters, or a team festival, where the player can choose three other teammates to play.

New to the game is a marketplace that allows the player to purchase various items such as clothes and accessories for the player's Mii, tunes from both series, and customizable snowboards. Players can purchase these items using Star Tokens, which earn based on their performance. Also, the gallery for Olympic trivia has now been replaced with the Library.

Also, all authentic (real-life based events) are unlocked from the start. Dream Events are in this game and all of them (excluding 2) need to be unlocked.

The aforementioned Festival Mode, is a special adventure mode where the participants must compete with some boss characters from the Mario and Sonic series in various events. Both the DS and the Wii versions take place in a place known as Christmas Village.

Olympic events

 * Alpine Skiing - Downhill
 * Alpine Skiing - Giant Slalom
 * Ski Jumping - Individual Large Hill
 * Ski Jumping - Team Large Hill
 * Freestyle Skiing - Moguls
 * Freestyle Skiing - Ski Cross
 * Snowboard - Halfpipe
 * Snowboard - Snowboard Cross
 * Speed Skating - Speed Skating 500m
 * Speed Skating - Short Track 1000m
 * Speed Skating - Short Track Relay
 * Figure Skating
 * Bobsleigh - Skeleton
 * Bobsleigh
 * Ice Hockey
 * Curling

Dream events

 * Dream Alpine - Individual
 * Dream Alpine - Team
 * Dream Ski Jumping - Individual
 * Dream Ski Jumping - Team
 * Dream Ski Cross - Individual
 * Dream Ski Cross - Team
 * Dream Snowboard Cross - Individual
 * Dream Snowboard Cross - Team
 * Dream Short Track
 * Dream Figure Skating
 * Dream Bobsleigh
 * Dream Ice Hockey
 * Dream Curling
 * Dream Snowball Fight
 * Dream Gliding - Individual
 * Dream Gliding - Team

Characters
All of the characters from the previous game, including Miis for the Wii version, return. There are also four new characters who were not present in Mario & Sonic at the Olympic Games. Retaining the first game's style, all playable characters are unlocked from the start (including new participants).

Team Mario

 * Mario
 * Yoshi
 * Luigi
 * Peach
 * Daisy
 * Wario
 * Waluigi
 * Bowser
 * Donkey Kong (new)
 * Bowser Jr. (new)

Team Sonic

 * Sonic
 * Tails
 * Knuckles
 * Amy
 * Blaze
 * Shadow
 * Silver (new)
 * Dr. Eggman
 * Vector
 * Metal Sonic (new)

Other

 * Mii

It is possible to customize the outfit of the Miis in the game. Aside from differently colored suits, the Miis can also wear outfits that resemble the ones of the regular playable characters and a few bosses. For example, it is possible to give a Mii a Mario costume or an Amy costume. The player can buy equipment through the store in the game and unlike Mario & Sonic at the Olympic Games, the Miis' stats gets altered depending on the equipment they wear.

Mario series
There is a total of 16 different costumes for Miis based on characters from the Mario universe.

Sonic series
Like the Mario universe, 16 characters from the Sonic universe also appear as costumes for the Miis.

VIP members
These characters only appear as cameos and tells the player that they've been watching the player in certain events. Pausing the game and hitting the when they're spotted gives the player 100 Star Points. The VIP members are: When the player spots Birdo and Big the Cat, they will also be given costumes.
 * Pianta
 * Birdo
 * Penguin
 * Big the Cat
 * Chaos
 * Cream the Rabbit
 * Santa Claus (only in December, gives 300 Star Points instead of 100)

When the game is played during the month of December, Santa Claus also appears as a VIP. Unlike other VIP characters, Santa gives 300 Star Points instead of 100.

Other characters

 * Toad
 * Cream the Rabbit
 * Lakitu
 * Shy Guy
 * Charmy Bee
 * Espio the Chameleon

Mario rivals

 * King Boo - Alpine Skiing Downhill / Giant Slalom (Individual Festival Only)
 * Big Bullet Bill - Skeleton (Individual Festival Only) / Bobsleigh (Team Festival Only)
 * Dry Bowser - Ice Hockey
 * Dry Bones - Ice Hockey (alongside Dry Bowser) / Curling (Team Festival Only)

Sonic rivals

 * E-123 Omega - Speed Skating 500m (Individual Festival) / Short Track Relay (Team Festival)
 * Jet the Hawk - Snowboard Cross
 * Rouge the Bat - Figure Skating
 * Eggman Nega - Ski Cross

Locations
Locations from both Mario and Sonic series appear in the Dream Events. The following stages are:

Mario series

 * Mario Circuit (featured in Dream Ski Cross) from Mario Kart Wii
 * Bowser Castle (featured in Dream Ice Hockey) from Mario Kart Super Circuit
 * Good Egg Galaxy (featured in Dream Ski Jump) from Super Mario Galaxy
 * Sherbet Land (featured in Dream Curling) from Mario Kart 64
 * In Dream Figure Skating, three backgrounds from New Super Mario Bros. appear: World 1, Bowser's Castle, and Peach's Castle.
 * Dream Snowball Fight has the same music as in Cool, Cool Mountain and Snowman's Land from Super Mario 64.

Sonic series

 * Radical Highway (featured in Dream Snowboard Cross) from Sonic Adventure 2
 * Seaside Hill (featured in Dream Alpine) from Sonic Heroes
 * Nocturne/Special Stage (featured in Dream Bobsleigh) from Sonic Chronicles: The Dark Brotherhood and Sonic Heroes
 * Egg Factory (featured in Dream Speed Skating) from Sonic Riders
 * In Dream Figure Skating, three Sonic backgrounds appears: Green Hill Zone (from Sonic the Hedgehog), Death Egg Zone (from Sonic the Hedgehog 2) and the destroyed Station Square (from Sonic Adventure).
 * Dream Gliding has the same music as in Sky Sanctuary Zone from Sonic and Knuckles.

Trivia

 * Bowser's profile artwork is the same as his artwork for New Super Mario Bros. Wii, which came almost a month after this game.
 * An app based on this game was released for Apple's iPhone and iPod Touch, but only features Sonic characters and thus is named simply Sonic at the Olympic Winter Games. This game has since been removed from the AppStore.
 * This is currently only game in the series to be released on both consoles on the same day.