Okay, okay, I know. There have probably been a lot of fan games that fit that title, but I'm referring to the one left unfinished (far as I know) by YouTube user Huepow00. I remember there were either 2 or 3 trailers for the game, it had a unique twist for a Klonoa game, even if just fan-made.
I could only find one of the 2 (possibly 3) trailers for it.
Despite date saying it was published May 13th, 2014 (maybe that means it was edited?
Based on the comments I left there about 5 years ago (TheVideoGameFreak100) I think the video was uploaded in either 2011 or 2010.
Also, here's the project page for it:https://rpgmaker.net/games/258/