Lejendary Adventure (abbreviated as LA) is a role-playing game created by Gary Gygax, the co-creator of Dungeons & Dragons (D&D) and creator of Advanced Dungeons & Dragons (AD&D).

Three months after Gygax's death in 2008, his widow Gail withdrew all of the licenses from Troll Lord[2]: 382  and also from Hekaforge.

Like other role-playing games, Lejendary Adventure is played using polyhedral dice, pencils, paper, and sometimes miniatures.

Races in Lejendary Adventure include Dwarves, Ilves, Wylves (Ilves and Wylves are two of many Fair Alfar, i.e. what are usually called elves in other RPGs), Gnomes, Kobolds, and Veshoge.

The standard campaign setting is Lejendary Earth, called Learth.