It's a Mugen developed by Douglas Baldan/The Illusionist, it's clearly quite incomplete, but it's very interesting to play with those secondary Kirby characters, but it's clearly not a good game, it has battles that are frustrating, like Batafire and Tedhaun that fly and it's very boring to face, besides that there are 11 fights in arcade mode and the game is very easy and repetitive, in the first video I played normally, but in the other videos I modified the files to reduce it to 4 fights, so you can see the characters without getting so boring. Still, it would be pretty cool to see this game complete.
Name: Kirby The Dream Battle ver 3.1
Developer: Douglas Baldan (The Illusionist)
Year: 2013 - 2019 (last update)
Platform: PC
Available: free on Gamejolt
Currently, Fighting Log has 431 views for Kirby's Adventure across 8 videos. Less than an hour worth of Kirby's Adventure videos were uploaded to his channel, making up less than 0.56% of the total overall content on Fighting Log's YouTube channel.