Rustlight

Contains ads
Content rating
Everyone
1+
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Content rating
Everyone
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About this game

Rustlight is an idle survival game and colony builder set on a rust-red planet. Lead a small crew, build your base and keep everyone alive through day and night — even while you're away, your colony keeps working.

Mine ore, drill ice for water, grow food and raise solar panels. Then get ready for the night: the panels go dark, and your batteries, your reactor and your engineers are all that stand between the crew and the cold.

MANAGE YOUR CREW
Assign colonists to jobs — miners, farmers, engineers, scientists — and keep your buildings staffed: a module with nobody on it runs at half speed. Where you put your people is a real decision.

RESEARCH AND HARD CHOICES
Unlock 11 technologies and face 13 events with real consequences: dust storms, meteor showers, blight in the greenhouses, volunteers asking to land when there is no room for them. Every choice has a cost.

NEW ERAS, NEW RULES
Light the Terraforming beacon to start a new era, then leave on a new expedition with your relics and spend them on 16 permanent upgrades. Each era brings planet conditions that change the rules — cold, dust, long nights, low gravity, spores and more — so every run plays differently.

FEATURES
• Idle and incremental progress with real strategy: a day and night cycle that matters
• Base building with 12 modules and 4 crew jobs
• Goals every few minutes, plus daily goals and a daily supply crate
• Offline progress up to 8 hours: come back to a colony that kept working
• Prestige with expeditions, relics, permanent upgrades and generated eras
• Animated pixel-art colony with original music
• Free to play: ads are only optional reward videos you choose to watch — no banners, no forced ads
• No account needed, the game works offline, progress saved on your phone
• English and Italian
Idle survival colony sim: build, research and survive the night on a red planet
Updated on
Nov 11, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, App activity and 2 others
  • This app may collect these data types
    Location, App activity and 2 others
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

New: star systems! After your second expedition you can travel to a new system with its own colour and rule, and earn Stars for new permanent bonuses.
Faster start: the Crater opens sooner and there's a new Silo goal.
Optional reward videos are back: watch one only if you want the bonus.
Content rating
Everyone
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App support

About the developer
DANIELE CASAMASSIMA
tartaruswarp@gmail.com
Italy