StreetSmash is a new game mode introduced in Super Smash Bros. for Nintendo 3DS. In this mode, the player must knock other fighters out of the map, it's possible to fight other player by using StreetPass, when a token is knocked over the stage, the player will receive gold.

To control the token, use the Circle Pad, tapping it harder will make the token to move more quickly. Bumping into other tokens will build up damage bit by bit on both players. The more damage a fighter has built up, the easier it will be to launch him or her. Fighters take more damage if they get hit from behind.

Press the A Button to dash forward quickly. This is a great way of attacking fighters with their backs to you. Pressing and holding the A Button allows you to charge up the attack, greatly increasing the distance the enemy gets launched and the damage he or she takes when hit. However, you will be unable to move for a bit after unleashing an attack, which will leave you open to counterattacks.

It's possible to defend against enemy attacks by pressing the R Button to deploy your shield. If you have the shield up, you can also use the Circle Pad to dodge incoming attacks if you find yourself in a tough spot. If the dodge is used to avoid an attack at the last second, it's possible to use the A Button to perform a counterattack. Gold will be dropped whenever a token besides your own is knocked off the map. Dropped gold will belong to all players.

This mode's exclusive stage is StreetSmash Arena.