Earthworm Jim HD is going to have Co-op multiplayer. As so many things are it was outed by the achievements.
At first I was a bit worried because the levels in Earthworm Jim do not lend themselves well to having more then one person on screen, however it has been made clear that the co-op will take place in all new levels made just for the co-op.
I am a huge Earthworm Jim fan. I have played both 2D games several times and even followed the creator and played through the claymation adventure game Neverwhere.
While I am plenty excited for the HD remake I would really like it if the series could pick back up and continue with it’s zany absurdist humor.