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Defend your planets from planetary colliders and alien attacks in this breakout-style game! Use your intelligence to protect the planets!
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Train Fest starts Jul 20, 2026
Game Info
Humanity has colonized 16 planets across 4 star systems.
At that time, unknown planetary colliders and alien forces begin their attacks.
Your mission is to protect each planet using its defense systems.
Features
This game is a breakout-style game where you defend against planetary colliders and alien attacks.
You must manipulate four types of defense shapes to destroy planetary colliders and alien blocks in order to protect your planets.
Planetary colliders can destroy alien blocks, but they can also destroy the planets themselves, so be careful.
Your mission is to defend the planets from a total of 3,200 alien attacks.
Right now the cheapest offer for PLANET IMPACTER is CA$2.75 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for PLANET IMPACTER is CA$1.37 (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.
Create a free price alert on this page and KingsPrice will email you when PLANET IMPACTER 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.
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