Quote from: The Good AssyrianI also have Blue Rose, but that is mostly because at the time I bought it I was interested in True 20 and Green Ronin seemed unlikely to publish a generic version.

I also forgot I have the True 20 pdf when it was offered for free.  So 4.

Quote from: James J SkachAgain, in shame, I must admit that I'm pretty sure I got rid of all of my old back issues of dragon when I moved eleven and half years ago, when I wasn't gaming and didn't think I would again...

I've been carrying my 75 lb Dragon filled rubbermaid container around for years.

Basic D&D and Expert D&D.
Some smattering of AD&D (PHB and the DMG/MM and other books are around somewhere).
PHB and DMG AD&D 2nd.
PHB, DMG, MM and some misc modules/magazines for D&D 3.5 (A box of the players kit, and both starter boxes, blue and black dragon)

Basic I got as a kid for my birthday. Was in 5th grade? Expert I went and blew all my birthday money, savings, and whatever I could scrape together on as soon as we topped 3rd level a few days later. We were the very definition of monty haul, though we did all start off at 0 level.

AD&D because thats what all the cool kids were doing, 2nd because TSR said so... note I got out of the hobby about then.

3.5 because my kids got hooked, mainly through minis. Now, sometimes, it's all I can do to get a night to myself. The only things that trumps it is a football game, football/taekwondo/knights practice or homework.

Edit: Oh yea, I've got the true20 pdf as well, and the true sourcery supplement.

Variants: True20, Castles & Crusades, Iron Heroes and one or two others I may have forgotten about.

Well, right now I have the Rules Cyclopedia, the Core 3.5 books, and a hodgepodge of sourcebooks and adventures split between 1e and 3/3.5.  Had Iron Heroes and some of Monte's other variant stuff--didn't quite do it for me, so it was traded.

Variants:  True 20, C&C, F20 and a host of free, light d20 variants.

I don't have OD&D, but otherwise, I have some books from every other edition. I only have a Player's Handbook and Unearthed Arcana from 3.5 though.

Moldvay, RC, 2nd, 3rd. 1st edition was just before me and I never saw the point in going to 3.5, I could work around it just fine.

Holmes Basic boxed set - Bought when I was 9. Mind-blowing.
AD&D - Had to make the jump to the hardback books full of cool shit.
Moldvay Basic/Expert - Picked up later out of curiosity. Looking back, should have played this version all along.
2nd Edition - Seemed the thing to do at the time.
3E - Bought, played a couple times, not by cuppa tea.
C&C - Thought it would be the perfect solution for my old-school feel, rationalized mechanics needs. Disappointing.
4E? - Looks like it will be a full-court gamist break from the old rules, so I'll probably give it a try.

Eager to try: True20. Looks like it may be the system I've been looking for.

I have the BECMI+RC series and a 1st Ed DMG.  I also have 3.5 and a robust collection of supplements.

d20/OGL-wise I have Iron Heroes, Call of Cthulhu, d20 Modern and C&C.  I'll be dumping the last two soon.

I had a 2nd edition PHB and DMG but dumped them a while ago.

I've got the red-boxed Basic set, the Rules Cyclopedia (My personal favourite) and 2nd edition. Never felt the urge to pick up anything more recent and my groups have been happy enough with the earlier versions.

Expert set (no, I don't have the basic set to go with it... a friend had that one), 1e, 2e, 3e.

I never felt like it was warranted to get rid of my older stuff because there was always something that didn't get carried forward that I liked better in the older editions. Though I felt 3e rules were superior, I came to see in retrospect that 1e was marked by great adventures and 2e by great settings. Some little tidbits that got dropped by later authors still appeal to me. For example, I still use the 2e World Builder's Guide, and many creatures from 1e I prefer in their original form and I often make little tweaks to make creatures like their former selves (like giving demons and slaadi psionics.)

• My mom bought me the Holmes D&D--blue box/red dragon--when I was in 5th grade. I'm certain she's regretted ever since.
• 1st Ed.
• The Arduin Grimoire
• DragonFist
• D&D Basic
• 3.0 & 3.5
• Grim Tales
• Various D20 miscellanea

I skipped right over 2nd edition. I wasn't into high fantasy when it was out, though I did download DragonFist when it was free, as I was all about the martial arts fantasy.
I have other Arduin stuff that I don't count in the list, because it's really a separate game. I played for years and years and years, though, with just the three main AD&D books and the first three Arduin books.
So I guess I just have two editions and some variant stuff.

I'm not really sure why I have all of it. I guess I never throw anything out. Those Arduin books have limitless sentimental value.

3 and a half: Basic, 1st Ed. AD&D, 2nd Ed. AD&D and C&C (the "half" part of my collection).

Why?  The 1st Ed. stuff I got free. The 2nd Ed. stuff was used heavily. Basic (via the RC) I got through used bookstores for a song but haven't been used - purchased them more for the "what if" value than anything.  C&C I got cause I could, and it looks pretty dang good; may even play it one day.

Rules-wise I own all incarnations since OD&D except for Holmes, Mentzer, and 3.5.

I started with B/X, played the shit out of 1E, got 2E only because they were using it in that cool online game on the then new-fangled internet, played quite a bit of 3.0, ignored 3.5, and finally got a White Box for a very fair price.

I have

Mentzer: Basic to  Immortals sets.
The Rules Cyclopedia
1E Core books plus a ton of modules
2E Most of the published books.
and I sold my 3E when 3.5 came out.

I am keeping an open mind for 4E, but with no Dragon for previews it may get skipped altogether since I don't actually need to buy anymore RPG stuff.

I just have 3rd edition now although I have played 1st and 2nd edition as well.  It's one of those deals where I wanted to clear stuff out and sold them.  Way later in life, I picked 3rd edition on a whim and I held off buying 3.5.  In other words, no exciting or funny story behind it.