Planetary Defense

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Steam

SteamSteamOfficial

updated Jul 17, 2026

CA$1.19

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About Planetary Defense

Planetary Defense is an arcade game in which you have to defend the Earth from attacks by space ships for as long as you can. Use various modules that will increase your damage or cover the Earth with a protective dome to hold out as long as possible.

Game details

Released

Developer

Publisher

Platforms

Steam rating

2 user reviews (50%)

Age ratings

IGRS 3DEJUS LSTEAM_GERMANY 0

Game modes

Single-player

Planetary Defense price history

Lowest tracked price: CA$1.19 (Jul 7, 2026) · current best: CA$1.19.

Planetary Defense reviews

50% positive reviews all-time.

Planetary Defense — frequently asked questions

Where can I buy Planetary Defense at the cheapest price?

Right now the cheapest offer for Planetary Defense is CA$1.19 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.

What is the lowest price Planetary Defense has ever been?

The lowest price KingsPrice has tracked for Planetary Defense is CA$1.19 (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.

How can I get Planetary Defense at a discount?

Create a free price alert on this page and KingsPrice will email you when Planetary Defense 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.