Hiya!
1)
5) 1st Edition. I think this is what the original Hackmaster was based off of, so I'll go with that? I ran a handful of Hackmaster sessions. They were awful, because the original Hackmaster was virtually unplayable (it was more a parody than something meant to actually be played). I heard the newer edition was actually a pretty neat game, but I never got a chance to check it out.
Whoa there, Tex! Them's fightn' wurdz!
I'd say
1st Edition AD&D / Hackmaster 4th are easily my most played game. By far. I just started a new Hackmaster 4th Edition less than 24 hours ago.
Hackmaster 4 is a double edged game. It's got a lot of parody stuff sprinkled throughout, for sure, but those bits are just part of the 'fun read'. You
can take those as serious as a crit to the head...or you can take them for what they were; things to make you laugh. Some of the parody stuff I initially saw as 'silly', but after playing HM for so long now (off and on since it was produced back in, er...wow. Since 2001), some of it actually adds a lot to the game. Used "correctly", a lot of these parody-based things help lighten the mood and can be used as "comic relief" when the players need a laugh. And, on occasion, some of the rules that are seen as 'parody' are actually disguised "serious" rules.
IMHO, the tone of the game is set by the players and GM. We always played HM as an enhanced version of 1e/2e AD&D, with a side order of laughs when we needed them.

The general "randomness" of a lot of the mechanics are right up my ally and have produced some memorable...er... "incidents". No other game in recent memory has as many memorable moments for me/us. From epic success...to epic failure, Hackmaster has the capability to provide that in SPADES!

I'm so psyched for this new campaign! I can't wait to get hackin' again (well, I'm GM, so by that I mean walking that fine GM line between love and hate from my Players...).
PS: (btw, the "new" version of Hackmaster is the "5th"; the "3rd" edition was only played in the comic book series)
^_^
Paul L. Ming