Super smash bros. U and 3D (I will call it SSBU&3D) is the next generation of smash. There were three other games in the series. One for the Nintendo 64, Nintendo Game cube and Nintendo Wii. You can guess, SSBU is for the Wii u and SSB3D is for the 3DS.
These two games have very different graphics. The Wii U has HD graphics while the 3ds have 3d graphics. The 3ds screen is small so the characters are outlined in black.
Mario in SSBU
Mario in SSB3D
A lot of characters are returning from the previous games. From the mushroom kingdom are Mario, Luigi, Princess Peach, and Bowser. This is the first smash game in which Luigi is confirmed before the game releases. Nintendo shouldn’t forget the special dreamer of Pi’llow Island!!! Yoshi hasn’t been announced yet though.
From the jungles is Donkey Kong. Diddy Kong has not been announced yet… he might miss this one.
Coming in at sound speed is sonic the hedgehog (Also the worst contender in smash history) his buddy snake from the Wii version has not been announced.
The old duel of Mario vs Sonic. Comment who will win.
Others include Samus, Kirby, Marth, and Fox.
Now for the new contenders
Coming from the digital fitness room, it’s Wii fit trainer. No, seriously, you can be a fitness trainer fighting a man with a sword (AKA Link).
What did I tell you…
Also, our first character from an animal crossing game is Villager!! He can grab people with his net, grab their attacks and throw back there attacks.
You had me at the balloon helmet…
Also Mega Man has joined the fight… with a friend
wow… that is a weird dog
And the last newcomer descends from the stars… with a star!!! It’s Rosalina and Luma!!
There is little known about the storyline for this game but we know that it won’t be like the subspace emissary in Wii’s version. “There will be a single player [campaign], but it won’t be like the [Subspace Emissary] mode in Brawl,” Sakurai said at E3
Source: quote from Eurogamer.net