The Nintendo 3DS version of Super Smash Bros. will be released first this summer followed by the Wii U version in the Winter of 2014 according to director Masahiro Sakurai.
Sakurai also confirmed that "most elements" of the game will be rendered at 60 frames per second but some of the assist trophies and Pokémon will run at 30 frames per second.
While the character selection will remain the same between the Nintendo 3DS and Wii U, the stages between the systems will be different. In addition, each stage will be limited to just two theme songs while the Wii U version will be able to choose between multiple songs.
The Nintendo 3DS stages include Reset Bomb Forest, 3D Land, Spirit Train, Gerudo Valley, Arena Ferox, Tortimer Island, Living Room, Prism Tower, Rainbow Road, Find Mii, Balloon Fight and Jungle Japes.
Meanwhile, the Wii U stages include Mario Galaxy, Pyrosphere, Town and City, Boxing Ring, Pilot Wings, Skyloft, Windy Hill, Garden of Hope, Wii Fit Studio, Palutena's Temple, and Halberd.
For multiplayer, Nintendo recommends using a LAN adapter for Super Smash Bros. for the Wii U and a good WiFi connection for the 3DS version. When playing with random players online, two modes are available: “For Fun” and “For Glory.” In “For Glory,” only Final Destination stage variations are available. There are no platforms, elevated areas or items in this mode. It is a nice, clean battle between characters. In “For Fun,” all stages are picked randomly and all items and power-ups are available.
When playing with friends, full customization is available – players can set the rules, stages and items however they want.
Sakurai also revealed that all stages will have a flat Final Destination stage that contains no items.
Nintendo is also introducing a new Global Smash Power which is essentially a leaderboard that compares your score against everyone else that competes online. There are plans for a skill-based matchmaking system though.