Screenshots
Watch trailer on Steam ↗Alien Hominid Invasion
The Behemoth · Published by The Behemoth · Official site ↗
Very Positive — 89% positive (1,731 reviews) · 66 achievements
Last updated 27 Sept 2026
Old friends and bitter enemies await as you invade Earth alongside a Mothership full of alien friends! Blast, beam, and bite your way through an endless swarm of enemies as you and up to three of your fellow hominids cause mayhem with a huge arsenal of weapons, mutations, and acrobatic maneuvers.
£16.75
Lowest price we've ever recorded
View on SteamPrices can lag the live Steam store — always confirm before buying.
Price history
Action · 2023 · More £15 - £30 games
Join Old Friends and Enemies in a relentless alien onslaught as you lead a squad of hominids through Earth's defenses. Released in 2023 by The Behemoth, this action-packed game offers endless combat with an arsenal of weapons and mutations.
About this game
Steal intel from your enemies to sabotage their plans, observe the oddities of human life, blow up bosses, and mutate into a variety of powerful alien forms in order to take down the not-so-secret agents that are dead set on ruining your day.
Are you ready to assist your Mothership with the invasion of planet Earth?
Invade with up to four players through online co-op, couch co-op, or both!
Play across skill gaps with difficulty being set per player – one player can choose Friendly while another loses their mind on Insane!
Choose from three difficulty levels and two life insurance modes: Mastery Mode - earn more experience and better drops, but lose it all on death… YOLO!!
Permakeep - the standard alien invasion experience… There's nothing wrong with wanting to keep your stuff!
Unlock and equip an astronomical arsenal of unique weapons, boosts, and cosmetics to customize your alien.
Complete missions, level up, and mutate your alien to deploy new mechanics like super speed, healing, and flight!
Discover your preferred weapon, boosts, alien head, and mutation combos by experimenting with all the buffs (and debuffs) alien technology has to offer! What playstyle will you choose?
Remember: You can’t kill your agents if you don’t drink your juice!
Determine your own gameplay path with a non-linear leveling experience. Invade randomly-assembled neighborhoods from hundreds of hand-crafted city blocks to reach enemy headquarters.
Reach Sewer Kid Hideouts to unbox all your loot and spend your hard earned lunch money from your underground allies!
Unlock additional mutations after destroying each enemy HQ, get a holo-hug from Mama, and prepare for your next mission!
Redeem Mothership Data to load in bonus modifiers like extra lunch money, shield power ups, and more! Don’t forget to say thank you.
System Requirements
Will my PC run this? →Minimum
- OS: Microsoft® Windows® 10
- Processor: Intel Core i3 or AMD FX
- Memory: 8 GB RAM
- Graphics: Radeon R7 or Geforce GTX 770
- DirectX: Version 9.0c
- Network: Broadband Internet connection
- Storage: 3 GB available space
- Sound Card: DirectX compatible
Recommended
- OS: Microsoft® Windows® 10
- Processor: Intel Core i5 or AMD Ryzen 3
- Memory: 8 GB RAM
- Graphics: Radeon RX 580 or Geforce GTX 1060
- DirectX: Version 9.0
- Network: Broadband Internet connection
- Storage: 3 GB available space
- Sound Card: DirectX compatible
Supported Languages
*languages with full audio support
Latest news
AnnouncementsOfficial
The Steam Spring Sale has sprung with Behemoth game deals!
The sound of Digestors, the scent of Mutation Juice, Spring is in the air! Even better, you can grab any of The Behemoth’s co-op games at a discount thanks to the Steam Spring Sale, now through March 20th! Alien Hominid Invasion - 25% off! https://store.steampowered.com/app/843200/Alien_Hominid_Invasion Alien Hominid HD - 25% off! Grab your alien flower crown and play the Alien Hominid game that started it all for this big chicken! https://store.steampowered.com/app/1285360/Alien_Hominid_HD/ The Extra Terrestrial Bundle Or get both of our alien games in one out-of-this-world bundle! https://store.steampowered.com/bundle/34943/Alien_Hominid_The_Extra_Terrestrial/ Castle Crashers - 70% off! For those who prefer knightly couch co-op adventures – Castle Crashers is 70% off! Grab it before the Painter Boss Paradise DLC lands early this summer! https://store.steampowered.com/app/204360/Castle_Crashers/ BattleBlock Theater - 70% off! You can also get BattleBlock for a hefty discount before it receives a major quality of life overhaul! https://store.steampowered.com/app/238460/BattleBlock_Theater/ Pit People - 60% off! Feeling up for a wacky hexagonal turn-based adventure? Have we got THE co-op strategy game for you: https://store.steampowered.com/app/291860/Pit_People/ BEHEMOTH (now with Challenge Mode!) Our newest title isn’t on sale, but we’ve included it here in case you feel inspired to save baby chicks and go the distance! Make John Behemoth proud! https://store.steampowered.com/app/3027260/BEHEMOTH/ Big Chicken Happenings Alien Hominid HD and Alien Hominid Invasion are slated for a Spring release on PlayStation 4 and PlayStation 5! More intel coming sooooon. 👽 The Castle Crashers Painter Boss Paradise DLC releases early this summer here on Steam, featuring custom character capabilities and redrawn art for all official characters and weapons! You can add the DLC to your wishlist today! A Green Knight St. Patrick’s Day art contest is currently underway! Submissions are...Read full article on Community Announcements (The Behemoth)AnnouncementsOfficial
The Behemoth's co-op games are on sale!
{STEAM_CLAN_IMAGE}/36979166/6f30e14ea01014259dcf66ea5a2f550bb2a37fa2.png INCOMING TRANSMISSION: THE MOTHERSHIP HAS FOUND A NEW CO-OP SALE FOR ALL INVADERS! ALL BIG CHICKEN GAMES ARE ON SALE, NOW THROUGH FEBRUARY 17TH. It's time to grab three other alien pals for some couch co-op fun! Alien Hominid Invasion is 25% off during Steam's Couch Co-op Sale! Alien Hominid Invasion - 25% off! https://store.steampowered.com/app/843200/Alien_Hominid_Invasion {STEAM_CLAN_IMAGE}/36979166/3fe23ae361a1d20d290ca00e270f55d7e6ae42ed.gif Alien Hominid HD - 25% off! Get the original Alien Hominid game that started it all for this big chicken! https://store.steampowered.com/app/1285360/Alien_Hominid_HD/ The Extra Terrestrial Bundle Or get both of our alien games in one out-of-this-world bundle! https://store.steampowered.com/bundle/34943/Alien_Hominid_The_Extra_Terrestrial/ Castle Crashers - 90% off! For those who prefer knightly couch co-op adventures... Castle Crashers is STILL 90% off! Grab it before the Painter Boss Paradise DLC lands this year! https://store.steampowered.com/app/204360/Castle_Crashers/ BattleBlock Theater - 70% off! You can also get BattleBlock for a hefty discount before it receives a major quality of life overhaul! https://store.steampowered.com/app/238460/BattleBlock_Theater/ Pit People - 60% off! May I interest you in some hexagonal co-op whimsy? https://store.steampowered.com/app/291860/Pit_People/ BEHEMOTH (now with Challenge Mode!) Our newest title isn't a co-op one, nor is it on sale, but we've included it here in case you feel inspired to save baby chicks and go the distance! Make John Behemoth proud! https://store.steampowered.com/app/3027260/BEHEMOTH/ A Castle Crashers DLC development update is coming soon: If you've been wondering about our Behemoth Roadmap progress, we have an exciting announcement lined up regarding the upcoming Castle Crashers Painter Boss Paradise DLC! Tune in to our YouTube channel this Thursday, February 13, at 10:00 AM PST for a D...Read full article on Community Announcements (The Behemoth)AnnouncementsOfficial
Winter = Aliens on Sale!
{STEAM_CLAN_IMAGE}/36979166/4593a47c4d0950a327f4f3e840b5df71381ff1ae.jpg The Mothership has detected something cold and white falling from the sky. Is this what the earthlings call “the first snow of the year”? Why not enjoy the first snow of the year with some classic co-op goodness? From Castle Crashers to Alien Hominid Invasion, Behemoth Santa has a deal for you! Alien Hominid Invasion - 25% Off https://store.steampowered.com/app/843200/Alien_Hominid_Invasion/ {STEAM_CLAN_IMAGE}/36979166/3fe23ae361a1d20d290ca00e270f55d7e6ae42ed.gif Alien Hominid HD - 25% Off Get the original Alien Hominid game that started it all! https://store.steampowered.com/app/1285360/Alien_Hominid_HD/ The Extra Terrestrial Bundle Or get both of our alien games in one out-of-this-world bundle! https://store.steampowered.com/bundle/34943/Alien_Hominid_The_Extra_Terrestrial/ Castle Crashers - 90% Off https://store.steampowered.com/app/204360/Castle_Crashers/ BattleBlock Theater - 70% Off https://store.steampowered.com/app/238460/BattleBlock_Theater/ Pit People - 60% Off https://store.steampowered.com/app/291860/Pit_People/ Can’t Stop Laughing Bundle - 66% Off! https://store.steampowered.com/sub/43401/ BEHEMOTH - our latest game! For those rebels who prefer games that aren’t on sale: https://store.steampowered.com/app/3027260/BEHEMOTH/ What’s next for our alien crew? We previously announced that Alien Hominid Invasion AND Alien Hominid HD are soon invading PlayStation 4 and 5! Be sure to follow us on Steam and social media to keep up with our progress! 👽❤️Read full article on Community Announcements (The Behemoth)AnnouncementsOfficial
The Steam Autumn Sale Is Here! 👽
{STEAM_CLAN_IMAGE}/36979166/f2b01755546ad6abf58867b81f2663461359d8ff.png INCOMING TRANSMISSION FROM YOUR MOTHERSHIP: A SALE HAS BEEN DETECTED. Earthlings are celebrating “Autumn”, something that we require more intel to fully understand. Your orders are to beam down to a city block, carefully place 1,009 leaves in a pile, and launch your organism into the pile. This is what the humans refer to as “fun”. Alien Hominid Invasion is 25% off during the Steam Autumn Sale, now until December 4th! Alien Hominid Invasion - 25% Off! https://store.steampowered.com/app/843200/Alien_Hominid_Invasion {STEAM_CLAN_IMAGE}/36979166/3fe23ae361a1d20d290ca00e270f55d7e6ae42ed.gif Almost* all of our games are discounted in Steam’s Autumn Sale, from this very moment in Earth time until Wednesday, December 4th! *If you’re a rebel and prefer to buy games during sales that AREN’T on sale, our latest release, BEHEMOTH, is NOT on sale, AND only $3.99! BEHEMOTH - our latest game! https://store.steampowered.com/app/3027260/BEHEMOTH/ Alien Hominid HD - 25% Off Get the original Alien Hominid game that started it all! https://store.steampowered.com/app/1285360/Alien_Hominid_HD/ The Extra Terrestrial Bundle Or get both of our alien games in one out-of-this-world bundle! https://store.steampowered.com/bundle/34943/Alien_Hominid_The_Extra_Terrestrial/ Castle Crashers - 90% Off https://store.steampowered.com/app/204360/Castle_Crashers/ BattleBlock Theater - 70% Off https://store.steampowered.com/app/238460/BattleBlock_Theater/ Pit People - 60% Off https://store.steampowered.com/app/291860/Pit_People/ New Merch and a Sale! {STEAM_CLAN_IMAGE}/36979166/c1d9efa94c94ba6c6733854023685ec0be03f22b.gif The Behemoth is also hosting our own merch sale on our very own merch site! Running November 27 until December 2, get 30% off your order with the following code: GobbleyGoop And as if a sale wasn’t enough, we just dropped a bunch of fresh merch for you! Be sure to get any holiday merch orders in before our holiday...Read full article on Community Announcements (The Behemoth 2D)AnnouncementsOfficial
BEHEMOTH is out now on Steam!
Happy Halloween AND BEHEMOTH LAUNCH DAY! What does this adorable game have to do with Halloween you might ask? This. This right here: {STEAM_CLAN_IMAGE}/36979166/2ac2dbae16ab40a321f92079e29424092db71ca8.jpg Truly terrifying. BEHEMOTH is now live on Steam with a 10% off launch discount! Are you ready to become THE chicken, dodge n’ flap your way through the skies, secure your flock in the nest, and collect as much candy corn as chickenly possible? https://store.steampowered.com/app/3027260/BEHEMOTH/ We made BEHEMOTH to celebrate the twenty-one years we’ve spent making games, and it’s all thanks to you, the community who has supported us through it all. From the bottom of our little (big) chicken hearts, thank you. We hope you enjoy BEHEMOTH, and as always, let us know what you think! See you on those daily leaderboards! BAAAAAWK!Read full article on Community Announcements (Behemoth Chicken #3257682387462)
