|Twin Agate Dragons|
As suggested, the adventure is broken up into 4 sub adventures, for 10th, 14th, 17th and 22nd level. There will be level gaps in between.
I just picked it up today and have been thumbing through it.
It continues on the events of Return to the Tomb of Horrors.
Really? Wow, I remember going through the 2e RTTTOH and it was Brutal. FYI, My character did survive, but later I found out she turned into a vampire. Fun stuff, he he
I got a version of this for being part of their DM rewards program. Was softcover and looked like the rest of their published adventures. Is my copy just one of the tiers then?
Nope, the DM rewards ToH is simply a 4e conversion of the 1e module. The super adventure is a continuation of ToH and Return to the Tomb of Horrors.