Alien Investigator
Offers
Trailers & screenshots
1 / 10



About Alien Investigator
Alien Investigator is an online co-op horror game for up to four players. You and a team of investigators explore an alien invasion, gather evidence and try to identify the extraterrestrial beings while surviving their presence. Investigations earn you experience and money if you identify the alien and make it out alive.
The investigation
The first act takes place around remote mountains, where strange luminous signals appear in scattered fields and triangular lights cross the night skies above nearby cities. Extraterrestrial races use the mountains as a refuge while carrying out abductions and experiments. Your first task is to gather information and identify the entities, knowledge that could help defend humanity. The aliens conceal themselves and resist your intrusion as you investigate the signals and the reasons for the invasion.
You learn about extraterrestrial phenomena through photos, videos and eyewitness accounts. The game includes seven types of evidence based on reported sightings and encounters, such as crop circles and abductions.
Aliens and equipment
You can encounter 18 alien types based on real-life stories, including Greys and Reptilians. Tools help you determine which alien you face: a walkie-talkie can pick up their voices when they are nearby, while ultraviolet light can reveal their tracks. You can upgrade your equipment as your investigator level increases.
Co-op investigations
Up to four players can join an online game, share their knowledge through voice chat and investigate together. Dozens of random events make each playthrough different.
Frequently asked questions
The best price for Alien Investigator is $0.92 at Kinguin. That is 92% less than on Steam, where it costs $11.99. 2 shops have an offer that activates in your country.
Some are. This page only shows offers that activate in your country; offers for other regions, or with no stated region, are left out. To see the offers for another country, change your country at the top of the page.
Every key we list activates on Steam. Redeem the key there and Alien Investigator stays in your library for good.
Yes, with a small risk. Publishers create keys to sell in other shops, which is why a key can cost less than in the official store, and once you activate it the game is yours to keep, just like a store purchase. On average 1–2% of keys fail, so check the shop's buyer protection before you buy: the official store does not refund keys bought elsewhere.
The minimum requirements for Alien Investigator are: Windows 10, GeForce GTX 970, Intel Core i5-4590, 8 GB RAM. It runs on Windows only. The recommended specs are in the System requirements section.
Yes. Alien Investigator has multiplayer and a single-player mode. It supports online co-op.
Mostly, yes. Valve rates Alien Investigator as Playable on the Steam Deck: it runs, but may need some manual setup.
Buy Alien Investigator 92% cheaper than on Steam.
Alien Investigator is available for 92% less in shops such as Kinguin.
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.











