I cannot remember how big the difference is in the content but there is also the Drakar och Demoner Jubileumsutgåva from 2012 with new shape and cover art at least.As I have played the game since the early 80s and own everything released for it (excluding Trudvang), I might be able to shed some light on this complicated topic:
Timeline
- -- Äventyrsspel / Target Games --
- 1982 - Drakar & Demoner (v1.0)
- 1984 - Drakar & Demoner (v2.0) - Big update to layout and language, more content, new illustrations, new box
- 1985 - Drakar & Demoner (v2.1) - Very minor rules revision, starter adventure replaced
- 1987 - Drakar & Demoner (v3.0) - Rules mostly unchanged but clarified, new layout, new illustrations, some monsters replaced, slight change to the box cover
- 1987 - Drakar & Demoner Expert - Not a new revision, just a big expansion of every aspect of the base game, still required the base game, lots of adventures and modules required Expert
- 1987 - Drakar & Demoner Gigant - Not a new revision, just a big expansion, focused on campaign aspects
- 1987 - Drakar & Demoner Gigant - 2nd printing of Gigant, incredibly minor revision
- 1991 - Drakar & Demoner (v4.0) - Game is no longer divided into base game and Expert and contains overhauled content from both, introduced things like creating your character by spending background points, and occupations each received a unique ability
- 1994 - Drakar & Demoner Chronopia (v5.0) - New layout, new illustrations, a book instead of a boxset, new campaign setting which is included with the game for the 1st time, earlier editions had a campaign setting sold separately, rules mostly the same as v4.0
- 1994 - Drakar & Demoner Chronopia (v5.x) - 2nd printing with a couple of full color bonus pages with information about the previous campaign setting, I believe it's otherwise unchanged, printed year still says 1994 but it's possible it's actually later and this just carried over from the 1st printing
- -- RiotMinds --
- 2000 - Drakar & Demoner Trudvang (v6.0) - A completely different game, new company, new rules, new world, new artstyle, level based instead of skill based, Drakar & Demoner in name only
- 2002 - Drakar & Demoner Expert - Expansion that introduced some alternative rules a bit more similar to previous editions after major backlash
- 2003 - Drakar & Demoner Trudvang (v7.0*) - New revision, however... (continued below)
- 2006 - Drakar & Demoner Trudvang (v8.0*) - RiotMinds counts this boxset as the 7th edition (more information under additional notes)
- 2016 - Drakar & Demoner (v9.0) - A kickstarted "retro" throwback to the Äventyrsspels Drakar & Demoner, which disappointed a lot of the backers
Additional notes:
- Both the 1985 and 1987 releases are referred to as the 3rd edition in their rulebooks
- While it says 5th edition on the side of the 1994 book, the foreword says it's either 5th or 6th depending on how you count 1985's v2.1
- RiotMinds calls their 2006 boxset the 7th edition, but most players call it the 8th because of the 2003 revision, but it can also be the 9th depending on how you count v2.1
- Not everyone, myself included, count RiotMinds Drakar & Demoner Trudvang as Drakar & Demoner
This means, if my calculations are correct, that Fria Ligans Drakar & Demoner is either edition 7, 8, 9, 10 or 11.
I hope that clears things up
Riotminds also made Drakar och Demoner Ereb Altor Vol 1 Caldarox (2019/2020) that is a complete rule system.
Some also count Drakar och Demoner Samuraj.
There is also another "version" of Drakar och Demoner 91 where one includes tin figures and the other does not. If there are any other changes they were very minor so probably not enough to count as another edition.