Ultima Ratio Neptunus
The ocean floor is your final battlefield.

After the collapse of civilization, the seas swallowed the world. Only one option remained for humanity: descend.
You pilot the last combat submarine, armed to the teeth and carrying a nuclear warhead as the final measure — the ultimate reason of Neptune.

Explore a dystopian underwater world, infested with Lovecraftian horrors, forgotten cities, and alien biomes. Mine precious resources, upgrade your vessel, and prepare for extreme decisions.
Every dive could be your last. Every meter deeper takes you closer to the abyss — and the unknown.

🧠 Core Features:

Procedurally generated map

Submarine shooting, excavation, and explosions

Upgrade system and limited inventory