The Sunless Citadel and The Forge Of Fury are considered some of the best from Third edition, but they're also very weird adventures. This is heavy dungeon crawling at it's best as you have three different adventures with giants you can take, all with their own rewards and horrible setbacks. Against The Giants is one of the books where AD&D really hits it's stride as you're now in a campaign that requires you to be at least Level 8 to play, and it doesn't mess around. You have to navigate the entire temple and avoid all the traps to defeat the end beast and claim a treasure. This one is one of the highest rated C-Series adventures of all time, primarily because it takes you out of the normal D&D world and into a pyramid in the middle of a jungle. Which is a shame because there's nothing wrong with the titles, they're still fine adventures, they're just not as in-depth as some would hope.

The Hidden Shrine Of Tamoachan is one of the few C-Series adventures you'll see get reprinted, mainly because no one really works with the old-school Competitive play anymore, so they tend to get ignored by a lot of players. It's technically a short adventure, but considering how many enemies you face along the way, it can become a hefty challenge. Essentially, you're plundering a giant mountain with dozens of encounters along the way.

All stolen by the evil wizard Karaptis who vanished centuries ago into the mountain with gnomes and was never heard from again until now. You're basically on a quest to recover three magical weapons that are all sentient: A trident, a war hammer, and a sword. While Plume Mountain is considered one of the best adventures D&D ever put out but is also one of the hardest adventures in their entire library. This one is definitely built for a big party to navigate over the course of a couple sessions, or if you dare, one long session. I've only played it once in my life and never made it to the end because there's just so much poison along the way. It takes you on a quest through the tomb of a dead wizard named Acerarak, the simplistic goal of the adventure is to make it to the end and kill Acerarak while avoiding the hundreds of traps you could run into throughout his tomb. Tomb Of Horrors is a Gary Gygax original, using First Edition mechanics and later adapted for the A&D& ruleset. There are some wide gaps in there, but you're basically getting adventures from AD&D, Third Edition, and Fifth Edition. The complete list is: Time Of Horrors (1978), While Plume Mountain (1979), The Hidden Shrine Of Tamoachan (1980), Against The Giants (1981), The Sunless Citadel (2000), The Forge Of Fury (2000) and Dead In Thay (2014). These are classic original adventures from D&D's past from different parts of the series' cannon. This book is technically seven different adventures rolled into one, and they're not casual throwaway stories, either.

Tales from the yawning portal abe books