Planetary Defense
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About Planetary Defense
Planetary Defense is an arcade game where you defend Earth from attacks by spaceships for as long as possible. Use modules to increase your damage or cover the planet with a protective dome to hold out longer.
Frequently asked questions
The best price for Planetary Defense is $0.99 at Steam. It is the only shop with an offer that activates in your country.
The minimum requirements for Planetary Defense are: Windows 7, 1 GB RAM, 200 MB storage. It runs on Windows only. The recommended specs are in the System requirements section.
No. Planetary Defense is a single-player game.
Yes. Planetary Defense is the full base game. You need nothing else to play it.
Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.
Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.
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