To say the reaction of AM2R being taken down was strong is an understatement and many want to know what exactly happened between Nintendo and the creator of the fan remake. He released a statement on his blog and I highly recommend you read it, which will be at the source link but will post his statement here.

As you may know already, AM2R received DMCA notices in all the download hosts, and some parts of this blog. So far, no C&D letter was received. This project began a long time ago, while I was actually trying to learn the programming side of Game Maker. Instead of moving on with something else, when I learned a better way of doing something, I reiterated and improved the old code. Eventually, I learned to program in C#. Now I’m making a living as a professional programmer thanks to what I learned developing a fan game. Technically speaking, I’m satisfied. Artists started offering help. First with the main enemies, then with sprites, enemies, bosses. The forums started to come alive with fans making feature suggestions, and always being positive and optimistic about the project. I added new contents, trying to be respectful about the established lore. Demo after demo people liked the game. Then the game was out, and for a brief time, players enjoyed the game they were expecting for a long time. Artistically speaking, I’m satisfied.

What about the future? 
I’ll continue improving and fixing AM2R privately.

How will updates will be released, if at all?
I’m still working on it.

My priority now is to fix the invisible gravity suit bug that’s hindering many player’s experience. If you experience that bug, please visit the forum, and I’ll eventually provide a fix. Please, don’t hate Nintendo for all of this. It’s their legal obligation to protect their IP. Instead of sending hate mail, get the original M2 from the eShop. Show them that 2D adventure platformers are still a thing people want. You’re invited to share your thoughts at the Forum, or follow AM2R on Twitter for the latest updates.

Thank you.