Planet Nine
Control a customizable mech while exploring an alien world in a top down view. Your mission, set by an A.I. is to save the Ninth planet from an alien invasion. Gain levels, find loot and discover the history behind the Ninth Planet.
Offers
What are keyshops?Official stores
Official stores with direct support.
Keyshops
Third-party resellers. Often cheaper, without official store support. Keyshop prices vs Steam →
About Planet Nine
Control a customizable mech with over 100 different parts, gain levels, perks, find loot and discover data logs learn the history of the Ninth Planet.
Fast-paced combat where energy stores and shield will help keep you alive.
Use drones, flares, and sensors to gain the edge in a battle against hostile mechs and monsters.
Explore the dangerous land, caves, and vaults filled with hostile mechs, monsters, and raiders. Find containers filled with loot to upgrade your mech.
Mission-driven gameplay with free exploration.
Discover the secret of the Ninth Planet.
Main Features.
- Open world exploration.
- Mission driven gameplay with side missions.
- Mech customization.
- top down view.
- Fast paced combat.
- RPG elements.
- Single player.
Game details
Game details
Game modes
Languages
Features
Planet Nine price history
Lowest tracked price: €0.59 (Jul 7, 2026) · current best: €0.59 across 5 stores.
Planet Nine reviews
83% positive reviews all-time.
Planet Nine — frequently asked questions
Where can I buy Planet Nine at the cheapest price?
Right now the cheapest offer for Planet Nine is €0.59 at Gamivo. KingsPrice compares 5 offers from 5 stores — official stores and keyshops — and refreshes prices throughout the day.
What is the lowest price Planet Nine has ever been?
The lowest price KingsPrice has tracked for Planet Nine is €0.59 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
Is it safe to buy a Planet Nine Steam key from a keyshop?
Keyshops are marketplaces that resell game keys, usually below official store prices. The keyshops listed on KingsPrice deliver genuine Steam keys, but buyer protection differs from official stores — check the shop's rating and refund policy before buying. You can hide keyshop offers at any time with the keyshops toggle. Keyshop prices vs Steam →
How can I get Planet Nine at a discount?
Create a free price alert on this page and KingsPrice will email you when Planet Nine drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
System requirements
Minimum
- OS *: Windows 7, Windows 8, Windows 10
- Processor: Intel i5 3.20GHz or equivalent AMD processor or equvalent and above
- Memory: 4 GB RAM
- Graphics: 1 GB nVidia Geforce GT460 or eqiuivalent, AMD Radeon R9 200 Series or equivalent
- DirectX: Version 10
- Storage: 3 GB available space
- Sound Card: DirectX 9 Compatible Audio
- Additional Notes: Designed with aspect 16:9 in mind.
Recommended
- OS *: Windows 7, Windows 8, Windows 10
- Processor: Intel i5 3.20GHz or equivalent AMD processor or equvalent and above
- Memory: 4 MB RAM
- Graphics: 1 GB nVidia Geforce GTX660 or equivalentAMD Radeon R9 200 Series or higher
- DirectX: Version 10
- Storage: 3 GB available space
- Sound Card: DirectX 9 Compatible Audio
- Additional Notes: Designed with aspect 16:9 in mind.
