* Dungeon! (1974): Widely considered the first published role-playing game. It predates D&D and features a dungeon crawl-focused system, with rules for combat, magic, and character creation.
* Blackmoor (1975): Arneson's campaign setting, which was the basis for the first D&D game. Blackmoor was a medieval fantasy world with a rich history, unique monsters, and a complex political landscape.
* Contributions to Dungeons & Dragons (1974-1977): Arneson worked closely with Gary Gygax on the development of D&D, contributing significantly to the first edition of the game, including its rules and campaign setting.
* Other games and modules: Arneson created several other games and modules, including "The Temple of the Serpent" and "Castle Amber," which were published in various role-playing game magazines.
While he was instrumental in the development of RPGs, Arneson later wrote several books, including:
* The Blackmoor Chronicles (2005): A collection of stories and essays about the Blackmoor campaign setting.
* The World of Blackmoor (2011): A comprehensive guide to the Blackmoor campaign setting, including its history, geography, and inhabitants.
* The Arneson RPG Collection (2022): A collection of Arneson's early role-playing game material, including "Dungeon!" and "Blackmoor."
It's important to note that Arneson's work was often overshadowed by Gygax's, and his contributions to the early RPG scene are sometimes overlooked. However, his role in the creation of D&D and his influence on the genre are undeniable.