Earthworm Jim. If you are reading this, it is a game that you probably enjoyed as a child years ago (or maybe adult, I don't judge). This game is EJ2, no doubts about it. It is not however, the game that you want to play.
What is it then? This appears to be no more than the original code running in DOSBox. The game only supports the resolution of the era (640x480), fails to respond to mouse actions, and at times, fails to respond to basic keyboard actions. As other reviewers have stated, hit detection leaves a bit to be desired. This flaw turns Puppy Love from an adorable game of "aww, look, he is throwing puppies out the window" to "if that marshmallow misses another puppy in the middle I'm gonna lose it after Peter loses it on me." Also as other reviewers are saying, levels are missing (Lorenzen's Soil) or out of order (The Flyin' King).
To this day, I will pull out my Genesis and play some EJ2 to the last level. I would not however, play this game past the first level. This particular edition only serves as a last chance moneygrab from what once was a great enterprise. Do yourself (and your memories) a favor and play it on the consoles it was made for. Even if that means plugging in your old 386.