In a statement, bugs and online issues were highlighted as the main reasons for the delay:
We have an important announcement to share with our backers.
Although we understand that everyone was looking forward to playing Mighty No. 9 as soon as possible, a release delay is going to be announced for the game at Gamescom 2015, which is currently being held in Cologne, Germany.
This is a project that would not have existed without the support of our backers, so we at least wanted to deliver this news to our backers before it is officially announced.
We are unable to confirm a final release date at this time, however we will be aiming for a release in Q1 2016. Once a solid release date is set, we will announce it immediately to our backers and fans.
Of course, it is important to explain why exactly the game is being delayed.
As we have communicated in the updates to our backers, all of the core content for the game is developed and in a complete state. However, there are still bugs and issues pertaining to the online features that are included in the game. These bugs and issues have a direct affect on enjoyment of the game, so a decision was made to work these issues out before release.
Currently, comcept and their partners are working at full capacity to resolve these issues and fix any remaining bugs.
Mighty No. 9 is currently scheduled to release on PlayStation 4, PlayStation 3, PlayStation Vita, Xbox One, Xbox 360, Wii U, 3DS, PC, Mac, and Linux.
What do you think of the delay?