It was also made by one dude
One guy who reallylikes Mega Man 3(hey, I’m with you buddy) has created a build using Unreal Engine 4, and it actually looks pretty neat. This whole thing was developed by Handré De Jager, who has posted his project on YouTube, showing off the Gemini Man stage.
The concept is still a work in progress and it’s up in the air as to whether or not it will become a full fan game — right now, it’s just a side project. I can dig it!