Release date: 05/11/2023New game with the combined genre of strategic survival, Sandbox, and city-building simulation. Enjoy the simulation with a vast world to adventure with a great number of contents. Build your own economic system to sustain your ideal city of Ratopia.

Economically active Ratizens
- Citizens of Ratopia each own wealth and characteristics.
- There is no such thing as a free lunch!
- Supply jobs and services for Ratizens to make all happy.
Create extraordinary Policies
- Make a detailed policy to tax them all!
- Shouldn't the people all work restlessly for more profit?
- Create or prevent social disasters with your own policies.
Diverse adventures placed Underworld
- Explore and find the remains of the great old rats.
- Bring prosperity to the city through great expeditions.
- Some might wake up new apex predators, but who cares?