I don't know if I can predict games' launch periods, but I can predict when they will get announced...
Announcements at E3 2013: *pivotal for Nintendo to get both Wii U and 3DS sales**
- possibly a handheld Zelda for 3DS
- Whatever Retro IP has been in the works
- Monolith soft Wii U IP
- Bayonetta 2 Release Date (I predict it'll very shortly after E3)
- Either Mario Kart U or Super Mario U (or maybe both?!)
- Teaser for Zelda U or SSBU ? ;) (Akin to brawl in 2006) with a release in late 2014
Announcements at E3 2014:
- console Zelda U
- SSBU and 3DS
- (Optimistically...) new IP from shiggy? He says he's been working on something??
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The reason why I don't hesitate to put a lot of big first party things in the E3 2013 is because Nintendo did not announce big 1st party games for Wii or Wii U during either E3 2011 or E3 2012. I'm guessing that this is because they have been working on games during that time.
