Tales of the World: Radiant Mythology is an RPG game released in 2006 for the PlayStation Portable (PSP). It's a part of the larger 'Tales' series and features a unique storyline with classic 'Tales' combat systems. Players can create their own custom character and embark on a quest to restore the mana tree and save the world of Terresia. The game includes various characters from different 'Tales' games, offering a crossover experience with a blend of action and strategy in gameplay.