イース6 オンライン is an iPhone game by HD Games limited that is an adaptation of the popular RPG series by Nihon Falcom Corporation. The story follows Adol, an adventurer who finds himself on a beautiful island inhabited by the "Leda tribe" after being swallowed by the Great Vortex of Canaan in the far west of the Eresia continent. He is on a quest to uncover the mystery of the "winged people" and their great legacy. This game offers players an opportunity to experience the world of "イース" in a new way.

The game offers a variety of features, including an open-world environment, a variety of quests, a range of adventure elements such as a competition arena, team-play dungeons, and world events. Players can choose from four basic jobs and eight high-level jobs to defeat enemies. They can also use job skills and team coordination to defeat enemies. The game features high-quality art and a range of characters, all with their own unique stories, and offers communication features for players to connect with other players. The game is available for free and offers in-app purchases.