Earthworm Jim: Special Edition features all the content from the Mega Drive version of Earthworm Jim, but includes an extra level, "Big Bruty". Other levels have been expanded, and there are now three different (fully voiced) endings depending on the difficulty chosen. Other additions include a new homing missile weapon, a password system, new cheat codes and some new animations in the introduction and endings of the game.
Being a Mega-CD game, Special Edition features an enhanced CD audio soundtrack, and features more voice clips (all of which are clearer then their Mega Drive counterparts). On the other hand, CD loading times are introduced between stages.
Production credits
Program: Andy Astor
Additional Programming: David Perry, Nicholas Jones
Original Concept: Douglas Tennapel
Directing Animator: Mike Dietz
Animators: Douglas Tennapel, Edward Schofield
Art Director: Nick Bruty
Lead Artist: Steve Crow
Level Designer: Tom Tanaka
Ink and Paint: Eric Ciccone, Mike Pilotti
Clean Up: Clark Sorenson, Ryan Silva, Nicky Wilson
Assistant Artist: Lin Shen
Designed by: Many, Many Shiny Meetings
Produced by: Justin Siller
Music & Sound FX: Tommy Tallarico Studios, Inc.
Development Tools by: Andy Astor, Dan Chang, Psy-Q
Director of QA: Jeremy S. Barnes, 'Morpheus Blackstaff'
Console Technician: Brian 'Mac' McInerny
Lead Testers: Yuki Furumi, Dave 'The Pinky' Simon
Testers: Steve Rizor, Larry Smith, Chris Parker, Shane Cleavelin, Jeff Barnhart, Darren Monahan
Special Thanks: Brian Fargo, Becky Tran, Michael Koelsch, Rick Thrasher, Tex Avery, Shiny Spouses