Originally posted here: https://theotherside.timsbrannan.com/2024/05/retrospective-tsrs-gamma-world.html

There are currently seven editions of Gamma World, all following the same general theme: It is the 25th Century, and the Earth has been nearly destroyed by some global cataclysm. The nature of this cataclysm and the amount of humanity that survived changes from edition to edition.

All editions of Gamma World are credited to James M. Ward and Gary Jaquet. It was based on Ward's earlier sci-fi game, Metamorphosis Alpha. MA would give us Gamma World and the AD&D adventure Expedition to the Barrier Peaks.

The remnants of humanity and other beings now struggle to survive in a harsh and mutated world filled with bizarre creatures, dangerous mutants, and remnants of advanced technology.

Like Dungeons & Dragons, players take on the roles of adventurers exploring this radioactive wasteland. They can choose from various mutant characters with unique abilities, ranging from humanoid animals and plant people to cyborgs and psychic mutants.

Characters adventure in abandoned, destroyed cities, looking for the remains of civilization or something to survive in the wasteland.

In many, many ways, Gamma World IS Dungeons & Dragons. There is no magic, but there are high-tech, weird radiation and psychic powers. Making Gamma World into a D&D world is not a stretch. The 1st and 2nd edition rules are similar enough to Basic-era and AD&D 1st editions to make translations easy. In fact, the 1st edition of the AD&D Dungeon Master's Guide has conversion guidelines. Gamma World 4th edition is also very close to AD&D 2nd edition to make translations there east too. Dragon Magazine #183 has a conversion guideline for Gamma Word 4th edition and AD&D 2nd edition.

Gamma World 2nd Edition

This was one of the more popular versions of the game, coming out at the height of classic D&D's popularity. While I mentioned it is compatible with AD&D 1st edition, it has more in common with the Red Box D&D Basic that came out around the same time. It even came with the same sort of dice as the Basic sets. Considering that GW1 most closely resembles the Moldvay Basic set, this is not a surprise.

Gamma World 2nd edition is compatible with GW 1st edition, and is generally the same rules expanded and cleared up. Even the adventures and products for this game kept the same numbering codes from 1st edition.

This edition is expanded over GW1 and includes an introductory adventure. There are few more "monsters" in this one as well, but I'd need to set them side by side to figure out which ones are new.

Which one should you get?

All things being equal, I would go for the 4th edition rules myself. The 1st and 2nd have a great nostalgia factor for me, and while I have the 1st Edition, I likely go with the 2nd.

The 1st, 3rd, and 4th edition rules are all available as Print on Demand versions now. So that is also in their favor. I understand the 4th edition rules are very clean and a good print. I can vouch for the 1st edition rules myself. The 3rd has some issues, but I am also not a fan of the action table, so I am giving it a pass.

Despite my flippart remark in the discussions section, Gamma World 2e was arguably the best example of the game. In my opinion and others may disagree. And I'm not expert.

Each chapter in the main rule book and adventure book are a clear and concise rewrite from 1st edition.

Robots were clarified and added to, as well as the bestiary section, including illustrations by Elmore.

The leveling up system from 1st edition was scrapped in favor of earning ranks in cryptic alliances and social improvement.

Everything in 2e is backwards compatible with 1e.

And I'll be clear. I'm giving the 2nd edition gamma world rpg overall five stars; while the pdf e copy earns one star.

The content itself is excellent. The scan is extremely poor.