Alien War
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About Alien War
Alien War is set in 2222 AD, after an alien invasion has left only 5% of humanity alive. As the aliens begin their final attack, you fire the KPO9, humanity’s strongest surface-to-air weapon, to defeat them. Intercepting enemies earns EXP, which you can spend upgrading the weapon and its fully automatic missile pods.
Frequently asked questions
The best price for Alien War is $2.40 at Steam. It is the only shop with an offer that activates in your country.
The minimum requirements for Alien War are: Windows 7, GeForce GTX 960, 2 GB RAM, 100 MB storage. It runs on Windows only. The recommended specs are in the System requirements section.
No. Alien War is a single-player game.
Yes. Alien War 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.











