Planets

Planets are the backbone of your empire. Each planet you own makes probes every minute, and higher levels make more: a level-1 planet makes 1 per minute, a level-10 planet makes 10. Higher levels also make the planet physically bigger.

No capacity

There is no capacity limit. Probe counts grow without bound and nothing decays, so holding a big stockpile is perfectly safe.

Upgrading

Click one of your planets to check its info or upgrade it. An upgrade costs 100 × level² probes: 100 to reach level 2, 400 for level 3, 900 for level 4, and so on, up to a maximum of level 10. You can also automate upgrades so a planet levels itself up as soon as it can afford to (see Automation).