- Original concept by Chris Bateman & Simon Apps.
- First edition rules by Chris Bateman & Simon Apps.
- Second, third, fourth and fifth edition rules by Chris Bateman.
- Reprinting and revisions by Chris Bateman.
- First buyer Shane Arnold.
- Firearms consultants Shane Arnold & Charlie Winckless.
- Astrophysical consultants Professor Andrew Lyne & Dr. Pete Wilkinson from the Manchester University department of Physics.
- Computer consultants Professor David Brée (Artificial Intelligence), Dr. Linda Brackenbury (Optical computing), Dr. Jon Shapiro (Neural networks) & Dr. Mary McGee Wood (Natural language processing) from the Manchester University department of Computer Science.
- Philosophical consultant Cathy Bryant.
- First edition play testing by Shane Arnold.
- Third edition play testing by Shane Arnold, Simon Apps, Chris Bateman, Neil Bundy, Tom "Source-of-all-Evil" Burden, Sam Ineson & Andrew Wightman.
- Fourth edition play testing by Rob Baranowski, Chris Bateman, Richard Boon, Rob Briggs, Jonathon Bruce, David Brumby, Neil Bundy, Nick Elliott, Keith Garrett, Dave Gazey, INVALID OBJECT ID=34995, type=person, Aaron Lewis, Jon Rouse, James Rufus, Brian "Scarlet Pseudopod" Towlson & Charlie Winckless.
- Fifth edition play testing by Chris Bateman, Nick Elliott, Keith Garrett, INVALID OBJECT ID=34995, type=person.
- Additional fifth edition play testing to be announced.
- Vehicle designs by Chris Bateman, Dave Gazey & INVALID OBJECT ID=34995, type=person.
- Porta-loo and Kinky boots designed by Simon Apps.
- Everything else by Chris Bateman.
- Special thanks to Astounding Comics, Robert Briggs, Neil Bundy, James Cameron, Phillip K. Dick, Epic comics, Lawrence Watt Evans, Dave Gazey, Michael Golden, Frank Herbert, Peter Hyams, INVALID OBJECT ID=34995, type=person, Bill Mantlo, Marvel comics, Katsuhiro Otomo, Rudy Rucker, Ridley Scott & Walter Jon Williams without whom everything would have been a lot quicker...