There was an Earthworm Jim fan game being developed for fun by a group of fans some years ago.
LoOk is a brilliant animator, and used to post Earthworm Jim animated Sprites onto my forum quite a bit. He let me share them on this site.
This is a fan made project he has worked on with another fan who goes by the pseudonym of XeinR. They formed a little team and just got on with it for fun and experience.
Go to their Facebook page for the project .
They should look into making their own original video games & characters from the experience.
It always impresses me how determined fellow Earthworm Jim fans are, that they keep this stuff alive through art and expression.