Mario & Sonic at the Olympic Winter Games (Wii)

Mario & Sonic at the Olympic Winter Games is a sports game for the Wii and Nintendo DS, and is the 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, they were also handling publishing/marketing duties for all territories outside of Japan, while Nintendo has done publishing/marketing duties for Japan itself.

Versions
The game features modes that are exclusive on the Wii and DS versions.

Wii Version
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.

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 he/she earns 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 games in various events.

Wii Events

 * Alpine Skiing
 * Ice Hockey
 * Speed Skating
 * Bobsleigh
 * Snowboard
 * Skeleton
 * Downhill Skiing
 * Ski Jumping
 * Figure Skating
 * Snow Board Halfpipe
 * Freestyle Skiing

Wii Dream Events

 * Dream Ski Cross
 * Dream Snowball Fight
 * Dream Snowboard Cross
 * Dream Figure Skating
 * Dream Hockey
 * Dream Bobsled
 * Dream Ski Jump

DS Version
The DS version features Adventure Tour, a single player mode with a plot that involves Bowser and Dr. Eggman's scheme to melt all the snow by capturing the Snow Spirits. The Adventure Tour introduces one of the spirits called Frosty. Just as seen in the Wii version of the game, the DS rendition includes the introduction of boss characters appearing in the Adventure Tour mode. These bosses will be present in certain events where the playes have to compete against them to clear their missions.

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

DS Events

 * Alpine Skiing
 * Skeleton
 * Snowboard Cross
 * Bobsleigh
 * Figure Skating
 * Curling
 * Biathlon
 * Luge
 * Skating
 * Ice Hockey

DS Dream Events

 * Extreme Snow boarding
 * Deluxe Halfpipe
 * Ski Cross Racing
 * Rocket Ski Jumping
 * Super Sonic Downhill
 * Fever Hockey
 * Ultimate Figure Skating
 * Blazing Bobsleigh
 * Ski Shooting
 * Snow Machine Fight

Characters
All of the characters from the previous game, including Miis for the Wii version, returns. 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 character's are unlocked from the start (including new ones).

Team Mario

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

Team Sonic

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

Other
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 and Sonic at the Olympic Games, the Miis' stats gets altered depending on the equipment they wear.
 * Mii (Wii version only)

VIP Members
These charactes only appear as cameos and tells the player that they've been watching the player in certain events. To unlock costumes of them, the player first looks for the character in the event, pause, and press the minus (-) button. The cameo characters:
 * Birdo
 * Big the Cat
 * Chaos
 * Penguin

Mario Bosses

 * King Boo
 * Bullet Bill
 * Dry Bowser/Dry Bones

Sonic Bosses

 * E-123 Omega
 * Jet the Hawk
 * Rouge the Bat
 * Eggman Nega

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

Mario series

 * Mario Circuit (from Mario Kart Wii)
 * Bowser Castle (from Mario Kart Super Circuit)
 * Good Egg Galaxy (from Super Mario Galaxy)
 * Sherbet Land (from Mario Kart 64)
 * Cool, Cool Mountain (from Super Mario 64)
 * Bowser's Road (from Super Mario 64)
 * In Dream Figure Skating, three Mario backgrounds appears: World 1 (from New Super Mario Bros.), Bowser's Castle (from New Super Mario Bros.) and Peach's Castle (from New Super Mario Bros.).

Sonic series

 * Radical Highway (from Sonic Adventure 2)
 * Seaside Hill (from Sonic Heroes)
 * Nocturne/Special Stage (from Sonic Chronicles: The Dark Brotherhood and Sonic Heroes)
 * Ice Factory (from Sonic Riders)
 * Sky Sanctuary Zone (from Sonic 3 & Knuckles)
 * 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).

Trivia

 * This is the first Mario spin-off title in which Bowser Jr. and Diddy Kong never interact with each other.