Abyssal Evolution Demo

Abyssal Evolution is a fixed-view aquarium roguelite about building a living ecosystem. Deploy specialized fish, evolve and mutate them, combine equipment and remnants, manage pollution and Core Overload, and complete ten experiments before hatching an unknown deep-sea lifeform.

About Abyssal Evolution Demo

Abyssal Evolution Demo is a free Steam demo from Passive Games. Steam files it under Casual, Indie, Simulation and Strategy. It supports single-player and runs on Windows. Steam lists the release date as Oct 22, 2026. We first spotted it on Oct 23, 2026.

Type

Steam demo

Status

open

For

Abyssal Evolution

Developer

Passive Games

Genres

Casual, Indie, Simulation, Strategy

Platforms

Windows

Release

Oct 22, 2026

First seen

2026-10-23