Mario & Sonic at the London 2012 Olympic Games/London Party

London Party is the party mode of Mario & Sonic at the London 2012 Olympic Games. It plays more similarly to than the party mode present in the prequel. Players walk around London talking to characters to get an event or a bonus minigame to play for stickers. After playing, the stickers are placed in the sticker book and the process is repeated until Big Ben chimes (during either 6 AM or 6 PM, marking either the morning or the night). At this point, the player with the least amount of stickers in the sticker book chooses an event to play for a larger amount of stickers. The game continues until someone fills up their sticker book completely, in which case the game ends and the standings are announced.

Rivals
Occasionally, a rival will appear. They can be challenged for a larger sticker that takes up four spaces in the sticker book. The rivals and their events are as follows: A few rivals can also be faced again in the same London Party for a rematch (Eggman Nega, Dry Bones, Omega, Birdo).
 * Rouge the Bat: 110m Hurdles
 * Dry Bowser: Dream Long Jump
 * Jet the Hawk: Dream Discus
 * King Boo: Dream Sprint
 * Eggman Nega: Fencing
 * Dry Bones: Table Tennis
 * E-123 Omega: 100m
 * Birdo: 100m Freestyle

Bonus Minigames & Events
If a character isn't a rival, they either have a minigame/event for you or they'll just talk. If they're not hanging out just to talk, these are some of the bonus minigames you'll find: