Originally Posted by
Moon Wizard
I haven't heard either way about using the existing 4E ruleset for playing Gamma World.
I know that there is some interest from the community, and we're constantly checking in with Wizards to see if we can do something with any of their licenses. However, they haven't ever been open to sharing content, so nothing yet. We'll keep trying.
There are some card mechanics in the Savage Worlds ruleset, as well as an extension written by DrZeuss that is an add-on for Fortune Cards for 4E. If someone were adventurous and technical, they could probably hack on a few Gamma World specific features onto the 4E ruleset.
Regards,
JPG