Puggins
Explorer
Yeah, GURPS is 1986. Puggins might be referring to GURPS's precursor, The Fantasy Trip, published in 1980.
Well, my memories of back then are way hazy- I thought I remembered buying GURPS 3e back in 1989, and that the Fantasy Trip WAS 1e. Going back to my books, I see that it's 2e, and the Fantasy Trip is not listed as an edition of GURPS. So 24 or 25 years it is. Four editions in 25 years is still pretty good- especially since the 2nd edition came so close after the first.
And just to be clear, I'm not trying to imply that M&M's 3rd edition is too quick on the heels of 2nd edition. Just pointing out that lots of games have had editions last five or more years. Even with corrections to my list, I think that you can say the typical major RPG edition has lasted five years or more. M&M seems to be perfectly in line with most games.