Thalassa Null

THALASSA NULL

Thalassa Null is an open-world ocean horror game about survival, exploration, and escape.

You wake up alone in the middle of a dark sea. Small islands connected by narrow bridges. You don’t know how you got here — only that this place is wrong.

The islands are inhabited by strange blob-like creatures. Their dark blue forms blend with the sea itself, as if they are part of it.

These creatures are obsessed with money.
Some are neutral or watching silently.
Others are hostile, hunting you and trying to kill you.

The world is fully open. You are free to explore islands, cross bridges, and choose your own path. To survive, you must collect money, avoid dangerous creatures, and interact with the ones that won’t attack you.

Your goal is simple — but not easy:

Collect enough money to build a boat and escape the sea.

FEATURES

• Open-world ocean environment

• Islands connected by bridges

•  Unique blob monsters with different behaviors

• Money-based progression system

• Build a boat to escape

• Atmospheric horror focused on isolation and tension

• Save system for long sessions

•  Estimated 40–60 minutes of gameplay (may change during development)
  

DEVELOPMENT STATUS

This game is in early development.
All gameplay, visuals, and content are subject to change.

INSPIRATION

Inspired by atmospheric indie horror games, including Skyborne Terrors.