Leviathan

Leviathan casts you as a sailor-turned-captain navigating a 2092 world transformed by the Progenitor meteor—a cataclysm that unleashed monstrous Leviathans into Earth's oceans. Mr. Ovis positions this as more than standard harem fare: the core loop involves assembling a crew of skilled women, pursuing a high-stakes treasure hunt triggered by a job gone wrong, and surviving enemies who actively want you dead. The story hinges on who you romance and how you shape your captain's personality through repeated choice encounters.

Gameplay is choice-driven, meaning your decisions reverberate across crew dynamics, romance routes, and the main narrative arc. You'll spend time managing your team, gathering intelligence about the treasure, and making tactical calls that carry weight. The adult content sits comfortably in erotic romance territory—intimate scenes between you and your crew members are framed as character-bonding moments rather than gratuitous breaks from plot. Mr. Ovis emphasizes narrative cohesion, and the writing reflects deliberate pacing around both story beats and intimate sequences.

The game is fully multiplatform (Windows, macOS, Linux, Android) and supports English alongside fan-translated Russian and Simplified/Traditional Chinese versions—a notable accessibility effort. At version 2.6, the game has clearly been refined through community feedback. If you've played other harem AVNs but found them light on plot or consequence, Leviathan's treasure-hunting framework and emphasis on crew assembly offers a different structural anchor. The cyberpunk setting and oceanic hazards give the genre setup a distinctive texture.