Ptolus is a top tier setting.In 2007, a year after Ptolus was released, I answered an online ad for a campaign and played in it for 5 years. Playing in the city of Proud was an amazing campaign and the DM at the time really brought it to life.
We fought the dragon outside the theatre a bit after the bridge fight, but we were not at all equipped to handle an intelligent permanently flying enemy with high AC. Did I mention that my character was a fire kineticist?I remember that fight. The group that I played with nearly died during then, because we caught the attention of the Dragon right after the fight on the bridge.
The first 5 or so years when Monte cooks forums were active, those were the days. The traveling machine that got past around from DM to DM was amazing it was at our tablePtolus is a top tier setting.
As a player, Carrion Crown for PF1e. I usually loathe PF as a system , but they put out some great Adventure Paths for 1e, and this one was a blast. We completed 4 of the 6 books, but the campaign fizzled out as the GM found running PF1e at that level to be a logistical nightmare.
As a GM, I would - until last year - have said the Rise of the Runelords campaign I converted from PF1e to Savage Worlds. This was before Pathfinder for Savage Worlds was even a twinkle in Shane Hensley's eye, so I converted the whole thing myself. Now though, I would say the Wolfenstrahd campaign I am currently running, which started out as a SWADE conversion of Curse of Strahd and transformed into a Hellboy-adjacent pulp action game where a team of heroic monsters fight vampires, nazis and nazi vampires.
I have a player that has talked multiple times about being an investigator, but in the end always decides aganist it. I've been interested to see how it plays out if our campaigns.I am almost always a DM, but assuming "played" just means participated in:
In 2e D&D it was Night Below which was great.
In 4e it was a campaign that sprang out of Madness at Gardmore Abbey
In 13th Age it was Eyes of the Stone Thief (one of the best rpg products ever)
In 5e it was my conversion of the 2e Al-Qadim material into a huge campaign
As a player, I played an Investigator for the PF2E AP Blood Lords, and that was pretty fun.

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