I believe @mikemearls hacked a version of it for 5E but is being VERY selfish and won't share it. Meanie.
— John Appleton (@jaa0109) September 1, 2017
That's @GameFeil – I'm teh one with hacks of Gamma World and Star Frontiers that are lurching toward completion
— Mike Mearls (@mikemearls) September 2, 2017
Star Frontiers you say…. Well. yeah, been slowly grinding away on it since Christmas 2015, first thing I worked on using laptop I got that year
— Mike Mearls (@mikemearls) September 2, 2017