This was was created to help both applicants and players know where each game series is currently in term of "game canon." This is especially useful to know which characters are still alive and which aren't introduced yet.

Advance Wars Main Series: The events of all three games have occurred; it has been over three years since the ending of Dual Strike. Sturm is dead, Von Bolt is dead.

Animal Crossing: No set canon.

F-Zero: The original F-Zero? has happened, along with the Grand Finale, subsequent four-year suspension of the races, and F-Zero? X. SBG has currently stopped halfway through the events of GX (after story mode chapter 6 if you want to get really technical). Jody has been rescued from inside the building. 

Fire Emblem:
For Path of Radiance/Radiant Dawn: Canon takes place after both games have happened, but almost immediately after. Ike has not left 'never to be seen again'. Zelgius is dead, Dheginsea is dead; all other plot-related deaths have occured. Sephiran, Pelleas, and any other characters with condition-oriented deaths are alive.

Hotel Dusk: Post-game. It can probably be reworked a little to include almost whatever you want in your application. The only real big change is the time all of the events took place; everything game and game-related has been bumped up more or less 30 years to keep up with the rest of the other canons.

Kid Icarus: The canon is set a while after the events that took place during Kid Icarus. Pit saved Angel Land from Medusa several decades ago. Of Myths and Monsters did NOT happen or exist.

Kirby series: None of the game plot has happened canonly in the SBG setting, for if it were, none of the final bosses could be appable.  Kirby has yet to be a hero and save Popstar/Dreamland, so he has not met any of the bad guys unless you work this in your backstory.

Legend of Zelda: Considering having Midna already alters the timeline SBG's Zelda canon is a mixture of AU and Canon information. Characters come from various places, and it is assumed that Termina and Hyrule are two different places.

Metal Gear Solid: Game's Canon is right after Snake's first mission in Metal Gear Solid 2. That means all characters killed in the first game are dead, but those killed in the 2nd game when Raiden starts his missions are not (Solidus Snake, Olga, etc.). Furthermore, if you wish to app characters from the 4th game, please make sure to adjust their ages, considering this takes place about 7 years before those events. 

Metroid: Game canon takes place several years after the events in Metroid Fusion. That means everyonea vast majority of the other hunters are dead, and Samus's relationship with the Galactic Federation (as implied at the end of Fusion) is a bit... untrusting. Metroids are assumed to be extinct. Her gunship has been rebuilt almost from the ground up; it's a hybrid of the Metroid Prime 2 gunship (as seen in Brawl) and Super Metroid... because... it's cool. For simplicity's sake, her Power Suit is the 'Varia Suit', aka the classic design you see everywhere (like in Brawl). Oh yeah, and she probably blew up your home planet while you came to SBG.

MOTHER/EarthBound: MOTHER and MOTHER 2 happened. MOTHER 3 got as far as partway through Chapter 4 before everybody started migrating to SBG.

Panel de Pon:  Not much to say except that SBG's events occur some time after Panel De Pon has occurred. Thus, the game has happened, the Queen has informed Lip that she'll be the next Queen of the Fairies as the ending shows, etc.

Pikmin: As of 2009, Pikmin's canon in SBG falls more or less three years after the events of Pikmin 2. While EVERYTHING up to the very end of Pikmin 2 happened, Pikmin 3 never happened. There have been considerations to try to work in elements if it's possible, but the game isn't even out yet. Sizes of enemies, characters and Pikmin are AU, following the sizes used in Brawl. Pikmin are roughly the size of a small cat. Only to make this AU version more easy, Earth's air and atmosphere isn't poisonous to Hocotatians, but it was believed to be. (It's still not the best for them either. Especially with how thick the atmosphere is compared to Hocotate's.)

Pilotwings: Pilotwings SNES and Pilotwings 64 are somewhat cross-over'd in a sense in SBG's established canon. Although not yet stated in Nester and Goose's backstories (as well as Kiwi's whilst she was in the game), the landmark 'Izanu Island' from Pilotwings SNES where EVIL Syndicate was located on and whatever unnamed landmarks Pilotwings SNES takes place in are located around the area of the Pilotwings 64 landmarks (Holiday, Crescent, and Everfrost Islands, and the Little States continent). In SBG's canon, EVIL Syndicate's group of elite scientists were the group who created 'Meca Hawk' for their own sickening purposes before they got taken down thanks to Pilotwings SNES' events. (How they knew the pilot whom Meca Hawk was based on (Hawk, obviously, the 5th pilot in Pilotwings 64) is up to whoever apps him in the future, if anyone ever does.) The robot then wound up terrorizing landmarks afterwards, still leaving it unknown as to who created him by most... except for a couple of EVIL Syndicate survivors. Other than that, Pilotwings SNES and Pilotwings 64 happened just as seen in the games. Characters in this canon are VERY flexible regarding backstory and personality (except for a couple of qualities, such as Robin being established as Goose's childhood friend). Previous/adoptable characters include Kiwi Rhea Pomegranate.

Pokemon: As far as Kanto goes, canon is very (and I mean very) loosely somewhere between RBY/FRLG and GSC/HGSS. Green became champion of the Pokemon League and is currently the leader of Viridian City's gym. Red later went on to win the Pokemon League. Since we no longer have a Red or a Lance, the current champion is up to whomever apps one of them. Lavender Tower hasn't been torn down and replaced with a radio tower yet.

Sonic the Hedgehog: Canon is very loose, your best bet is to ask the players. Generally we all seem to accept all events up to SOnic Adventure 2 have happpened. Events in the RP have allowed Sonic to become a Werehog, but not like the game.

Star Fox: To be worked on.

Startropics: Startropics and Startropics 2: Zoda's Revenge have both happened.  SBG takes place one year after Startropics 2.  Dr. Jones is back on C-Island?, the Argonian children are back on their home planet, and Metal Gear REX is being hidden on the island.

Super Mario Classic: No real set canon. We assume events up until Galaxy have happened.

Super Mario RPG: The events of all Mario RPG games have occurred. The characters have been taken from such vastly different times that there is no solid timeline.

WarioWare: To be worked on.