It wasn't. They never recovered from the setting nuke, The products they got in second edition were a very poor quality. They made massive lore changes nobody liked, they wanted to put CDs in every adventure and box set. The authors the started cutting and pasting elements from other books to save time. It was definitely part of the death spiral of TSRI suspect the 2E revival of The Known World/Mystara was not especially successful.
I think a lot of this was overstated by people who were upset that BECMI was being abandoned in favor of 2E. And yes, I was part of the Mystara Mailing List where people screamed a lot about this in the years immediately afterwards.It wasn't. They never recovered from the setting nuke, The products they got in second edition were a very poor quality. They made massive lore changes nobody liked, they wanted to put CDs in every adventure and box set. The authors the started cutting and pasting elements from other books to save time. It was definitely part of the death spiral of TSR
< tangent >I think a lot of this was overstated by people who were upset that BECMI was being abandoned in favor of 2E. And yes, I was part of the Mystara Mailing List where people screamed a lot about this in the years immediately afterwards.
The 2E publications are fine, once you get past A) a lot of them were aimed at beginning groups and B) the very cringeworthy CD soundtracks.
The BECMI Mystara material was selling to a smaller and smaller audience all the time, and TSR was either going to have to try to do something to goose the line's popularity, like moving it to AD&D and doing a soft reboot, or they were going to let it die.
love her answer to "Shadowdark is not good for roleplaying and not good for long-term campaigns".Fun interview with Kelsey and Prof DM:
8:20 mark if you want to know her answer to the thumbnail. Spoiler: Hero, of course!

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