So, for a while, I have heard of this game called "Shocking", by an unknown Korean company called Yun Sung. It is an arcade game that is currently emulatable on MAME.

Per the 90s Korean tradition, it steals a lot of things. From what I can tell, it stole Betilla from the first Rayman, and also the Skypest enemies from Commander Keen. I believe some music is stolen too.

And before you think "oh, well, at least the gameplay is semi-original, am I right? It looks to play a little decently at least", well, I recently discovered that the game is in fact an unofficial port/remake/ripoff of a relatively unknown Japanese PC game called 幻世快進劇 (Gensei Kai Shingeki), released in 1996 by Compile (the Puyo Puyo people) as part of the 12th volume of their DiscStation series (though it also got a stand-alone release too). It even uses the same yellow wolf character and all (at least for Shocking's English version, the Korean version just replaces it with a human for some reason)


Here's a full playthrough in case you're interested.

And for comparison, here's a Nico Nico Douga playthrough of the original Gensei Kai Shingeki

And also what seems to be the only English blog entry with information on Gensei, which was how I made the Shocking-Gensei connection to begin with.
Shocking is...quite an interesting beast, no pun intended.