Tides of Tethys

Tides of Tethys is an immersive underwater roguelite simulation game centered around exploring and surviving the uncharted depths of an alien world, while building and maintaining modular outposts. Players…

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Indie Real Time Strategy (RTS) Simulator Strategy Fantasy Horror Open world

Tides of Tethys is an indie developed by Black Rust on PC (Microsoft Windows).

Verified 8 Oct 2026 Sources: IGDB , Steam

What Tides of Tethys is

Tides of Tethys was developed by Black Rust. It is available on PC (Microsoft Windows) only. It runs on Unreal Engine 4.

The premise, in the publisher's words

Tides of Tethys is an immersive underwater roguelite simulation game centered around exploring and surviving the uncharted depths of an alien world, while building and maintaining modular outposts. Players will lead expeditions of Knights into the unknown, in the hopes of rebuilding their long lost kingdom and unifying the houses of Tethys once again. As they dive further into the Abyss, they will discover compelling new places, uncover lost technologies, and conquer a variety of dangers that lurk beneath the surface.

Description from the publisher · source

How it plays

It is played from a bird view / isometric perspective. Its themes are fantasy, horror and open world. It is a single-player game with no multiplayer component.