Not a very good game adapation but it is currently free on DRM PDF at:
http://www.drivethrurpg.com/catalog/index.php
Has rules for radition, mutations, nanotechnology, cybernetics, communities. And it has Arks, Hoppers, and Seps. No mutant plants though.
Based somewhat on d20 Modern so I think the Psionics are the same. It's been reviewed on enworld.org, rpg.net, and other sites with generally mixed to poor reviews. Personally for Gamma World d20 I'd use the d20 mini-game (as in small not as in miniature figures) Omega World in Dungeon / Polyhedron.
But at the moment (this week?) it's free. Worth a look esp. for those who use T20 but don't run a straight canon OTU setting.
Casey
http://www.drivethrurpg.com/catalog/index.php
Has rules for radition, mutations, nanotechnology, cybernetics, communities. And it has Arks, Hoppers, and Seps. No mutant plants though.
Based somewhat on d20 Modern so I think the Psionics are the same. It's been reviewed on enworld.org, rpg.net, and other sites with generally mixed to poor reviews. Personally for Gamma World d20 I'd use the d20 mini-game (as in small not as in miniature figures) Omega World in Dungeon / Polyhedron.
But at the moment (this week?) it's free. Worth a look esp. for those who use T20 but don't run a straight canon OTU setting.
Casey