Nintendo 3DS

Nintendo 3DS is a starter stage in Super Smash Flash 2. The battle takes place on top of the handheld console, which can be one of three different colors as chosen randomly when the stage is loaded. Similarly to WarioWare, Inc., Nintendo 3DS interacts with the fighters by changing the stage layout to resemble different games, which are based on indie titles that are on the 3DS' virtual library. Though technically not considered part of the DS family by Nintendo, Nintendo 3DS is catalogued in SSF2 as a property of the Nintendo DS universe.

Layout
The battle takes on the giant Nintendo 3DS floating on deep space. Normally, the 3DS is just a featureless platform a la Final Destination, though the stage layout changes at set intervals. Each layout is based on indie titles available for the system. The games available are Bit.Trip Runner, Mutant Mudds, Tetris: Axis and VVVVVV. Whenever a game plays, the camera changes to a fixed-angle so players can see the whole stage and the boundaries.

List of games

 * Bit.Trip Beat: An orange paddle appears on the left side of the 3DS and will bounce back every incoming square back from whence they came. These squares are harmful for players so they inadvertently have to dodge them. The squares deal minimal damage and knockback, though they tend to appear en masse. Players can anticipate where the squares are coming through the top screen of the 3DS.
 * Mutant Mudds: Platforms rise from below, covering the bottom blast line and forming walk-off edges on both sides of the stage. These platforms come in segments that vary in height, and constantly change for the duration of this game.
 * Tetris: Axis: A grid appears and tetrominoes drop onto the field. If it lands on a player, they will take some damage and good knockback. Some tetrominoes are solid while others can be passed through from below, but not from above. Because of this, the player may get stuck between the tetrominoes with no possibility to escape. At the end, a straight Tetromino falls and fills the last gap, making every tetromino disappear.
 * VVVVVV: Gravity fluctuates between normal and reversed. The top and bottom blast lines disappear, allowing the players to wrap around the screen for the duration of this game. Players can easily get Star KOd or self-destruct, if they are not careful when the game ends, they may end up below the 3DS which cannot be trespassed and may hinder some recoveries.

Music
The main music track is titled StreetPass Mii Plaza Theme from the pre-installed 3DS application of the same name.

Origin
The Nintendo 3DS is Nintendo's sixth video game handheld console released in 2011 and is an autostereoscopic device capable of projecting stereoscopic 3D effects without the use of 3D glasses or additional accessories. This could be interpreted, somehow, as the player interacting with the games from a more real perspective thanks to the depth perception. In SSF2, this goes even further to the point fighters actually interact with the 3DS that technically the games "come out" of the device, literally. The Nintendo 3DS was released worldwide in two different colours: Aqua Blue and Cosmos Black, with a third colour, Flame Red, coming several months later, In SSF2, the 3DS randomly changes its colour just as the battle has begun, but it's only for aesthetic purposes.

Bit.Trip Beat is the first installment of the Bit.Trip series, it is a arcade pong-esque game where the player controls a paddle whose job is to reflect incoming beats to gain score. This paddle is in SSF2 and reflects incoming squares that can harm the fighters.

Mutant Mudds is 2D platformer where the players must make use of the 3DS capabilities to jump out into the background or foreground, in order to overcome obstacle and enemies and to proceed with the level. The platforms popping out from the bottom in SSF2 seems to be based on said ability for the players to change between background and foreground, considering some platform of the same kind are visible on the 3DS top screen.

Tetris: Axis is a puzzle game which makes use of the 3DS capabilities and offered a lot of game modes and special content. Virtually, there's no change in the Tetris formula, players have to fill every horizontal row to make the tetrominoes disappear. As Tetris: Axis is the original Tetris game for the 3DS, it appears on the 3DS stage where the tetrominoes fall from above and plays like a normal Tetris game, though they actually work as platform and can land on players, damaging them.

VVVVVV is a 2D platform game, where player are unable to jump, but have to change gravity to overcome obstacles. The gravity changing mechanic is implemented into SSF2 and characters continuously fall and rise on the stage, there's a minimal difference, though: whereas in VVVVVV the player stands on the roof when the gravity is changed, in SSF2 fighters stay in the same position and can't stand under the 3DS, the only solid platform of the stage.