The Irisus Sea is one of the seas in the world of Ashan, near the continent of Thallan.
Irollan, the land of the Elves, borders the sea, and the Twilight Archipelago is located in it.
| The kingdom of Irollan |
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| Heroes and benefactors |
| Sylanna |
| Alaron · Anwen · Arniel · Brythigga · Dirael · Earol · Euny · Findan · Galan · Gilraen · Lasir · Ossir · Sylrael · Talanar · Tieru · Thirdan · Tuidhana · Vaniel |
| Notable territories and cities |
Altyr · Blazing Sands · Dragonmist Islands · Druid Tree · Erewel · Forest's Edge · Hunter's lodge · Irisus Sea · Sun Crystal Lake ·  Syris Thalla · Twilight Archipelago
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| Relevant terms |
| Bear · Blade dancer · Day of the Tears of Fire · Deer · Druid · Elf · Green Dragon · Kersyl · Lay of the Steadfast · Mother of Trees · Pixie · Queen Isabel's War · Ranger · Shataqua · Sylvan · The Harmony · Treant · Unicorn · War of the Bitter Ashes · War of the Blood Moon · War of the Gray Alliance · Wars of Fire |
| Relevant games |
| Heroes V · Hammers of Fate · Clash of Heroes |