Gravity game

Planets

Learn how planets grow, unlock districts, and shape the expansion of your empire.

Planets

In Gravity Game, every empire begins with a single home planet. Over time, the player expands to additional worlds and develops them into a larger planetary network.

Planets are not all identical. They differ in size, available district capacity, and starting conditions, which means that expansion is not just about owning more planets, but also about deciding how to use them effectively.

Planet types

There are three planet sizes:

Small

  • 8 districts
  • 3000 planetary metals reserves
  • 50% higher biomass capacity

Medium

  • 12 districts
  • 1000 planetary metals reserves

Large

  • 20 districts
  • 500 planetary metals reserves

The player starts on a Small planet. The starting planet begins with:

  • a Capitol
  • one Industrial district
  • two empty districts
  • 100 metals in storage

Newly acquired planets start with:

  • a Capitol
  • three empty districts
  • no stored resources

Planet level and growth

Each planet begins at level 4. A planet’s level corresponds to the number of unlocked districts.

New districts are unlocked through Progress. When enough Progress is accumulated, the planet levels up and gains one additional district slot. The threshold is based on the previous planet level.

This means planets do not start fully developed. Instead, they grow over time as the empire invests in them.

Maintenance

Once a planet reaches level 9, it begins to require maintenance.

At that point, maintaining the planet costs:

5 × (level - 8) × (infrastructure + biomass + influence)

A planet cannot continue leveling once all of its districts are unlocked.

What planets are for

At a small scale, planets are meant to be developed more broadly and self-sufficiently.

As your empire grows, planets become more specialized. Instead of every planet doing everything, different worlds can focus on different roles, such as:

  • extraction
  • industry
  • research
  • transport and expansion

This shifts the game from simple local management toward building a connected interplanetary economy.