YMMV / Castles & Crusades

• Spiritual Successor: The game was designed to recreate the feel of the first edition of Advanced Dungeons & Dragons, except with changes to incorporate the d20 system. It worked so much as a spiritual successor that the Trolls in the early years of the game counted Gary Gygax, D&D's creator, as one of their close contributors. In fact he was working on finally bringing forth a version of his Castle Greyhawk megadungeon (under the name "Castle Zagyg" for legal reasons, as the rights to Greyhawk remained with TSR after he left) when he died in 2008.