I saw the thread title and thought this was going to be a write up of an idea I've been kicking around for a while: a campaign where the players make the same characters using the rules of every edition and then use the appropriate edition for the things/levels each edition did best. And then, with your X-Men reference, I thought about adding a time travel element to it, and I got really excited while waiting for the page to load.
At one point, I had considered doing a time-travel story where my group (currently in Pathfinder) went back in time to one of my earliest adventures and aided the original heroes in it. When they went back in time, their character's would be converted to Basic Fantasy (since I started my game in BECMI) for the duration of the adventure.
The idea got dropped, but I'm real tempted to try it again in another game...
If the original, even most of the original, players are with you, that sounds awesome. You can ramp up the difficulty in crazy ways, and let the "future" characters fend that stuff off without tipping off the "past" characters.
Very cool.
And expand it to every edition the group has played. Go through the highlights of all of those moments y'all still talk about and add another layer. Neat.
Thaumaturge.
I saw the thread title and thought this was going to be a write up of an idea I've been kicking around for a while: a campaign where the players make the same characters using the rules of every edition and then use the appropriate edition for the things/levels each edition did best. And then, with your X-Men reference, I thought about adding a time travel element to it, and I got really excited while waiting for the page to load.
But no. Le sigh.
Where is the reference in 5B? I did a cursory search of the pdfs, and I didn't see any.
Thaumaturge X.
"In ancient times, the world was Original, and there were many Dungeons, and many Dragons
<snip>

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.