So we've known this for awhile, the Wii U has been abandoned by 3rd parties. Nintendo fan's always complain about how their aren't enough 3rd parties, and they say they're "evil" and that's its unfair to them. But, nintendo fans have only themselves to blame; let me explain! So back when the Wii U launched, it had all the 3rd parties, from Assassins Creed III to Black Ops 2. However, these games ran on par or worse than their counterparts (the Xbox 360 and PS3). People whined, and didn't buy the games. In 2013, we started seeing 3rd parties leave, as no one was buying their games. Nintendo fan's started getting more and more angry, as one by one 3rd parties jumped ship. The launch of the next gen Xbox and Playstation was the nail in the coffin to any chance of Nintendo re-taking the market.
Now how did this all happen? Simple, these games DIDN'T SELL!!! Even if they sold millions on the 360 and PS3, they sold barely anything on the Wii U. In fact, some sold so little compared to their counterparts, they couldn't even BREAK EVEN on the porting costs. Nintendo fans demanded more and more, and didn't buy the 3rd parties no matter what. They all jumped ship, and I still hear to this day about Nintendo fan's whining about how they don't get 3rd parties. Don't expect them to come rush in when the games don't sell, you need to make money on these games. I'm probably going to get a lot of hate for this, but its time everyone heard it. This isn't the NES days where they where the only game in town. There's lots of competition, and in the NX screws up, Nintendo is fu*ked!