Chapter 1: Isla Dominion — HotA 1.5.0+

Chapter 1: Isla Dominion is a small 36 by 36 single-player map with an underground level, rated Hard and built for Horn of the Abyss 1.5.0 or later. Its story follows Kane, whose ship was nearly destroyed by a huge maelstrom and now lies stranded on an uncharted island. The single Castle-aligned player is human, with no teams. The standard victory requires transporting a specific artifact, and time running out after 56 days ends the game in defeat, so Kane must stay alive throughout. Water covers about 41 percent of the terrain, with subterranean and rock areas making up much of the rest. Wandering threats include pirates and sea serpents. Heroes are capped at level 5.