Fragmented
Stranded in a hostile alien world, you must fight to survive.
40% of 1,582 Steam reviews are positive$0.99
Games like When They Arrived
Did When They Arrived leave you in a tense and fast-paced frame of mind? You might settle into these games easily.
Mars Survivor
After an asteroid catastrophe, your rocket ship crash-lands in the wilderness of Mars. Explore the planet's mysteries, strategize your escape, and build a shelter to protect yourself!
Tense, Fast-paced
74% of 34 Steam reviews are positivePlayers online now: 1$5.99Unknown Planet
Your spacecraft has crash landed on an alien planet. Explore this unknown world, mine the resources, build your base, grow farms, craft equipment, fight off the alien lifeforms and survive.
97% of 32 Steam reviews are positive$3.99Invasion 2037
Become a survival scientist in a savage post-apocalyptic world where aliens have the control of the world and find a cure, manage your shelter and fight to survive
Tense
60% of 115 Steam reviews are positive$9.99Alien Apocalypse
An open-world sandbox survival game set after a devastating alien invasion. Scavenge for resources, craft, build defenses, and harness alien technology to fight back. Play solo or in co-op and reclaim what’s left of the planet.
Tense
48% of 27 Steam reviews are positive$17.99Hostile Planet: Survival
Hostile Planet: Survival is a harsh adventure on an uncharted planet that full of danger and trials.
Tense
62% of 99 Steam reviews are positive$6.99Hunted
Hunted is a free to play game in which you are the last survivor of an alien invasion, you must attack and destroy alien ovals that try and kill you. You can build, craft, and explore.
Tense, Fast-paced
71% of 28 Steam reviews are positiveFreeZibbs - Alien Survival
Zibbs - Alien Survival is an open world game where you play as an alien trying to survive on the unknown planet - Earth.
64% of 11 Steam reviews are positive$7.99LIFE EFFECT Survival
A harsh open world after an alien invasion, seen from first or third person. Scavenge, craft weapons and gear, build an army of robots, drones and tamed beasts, and clear a monster-infested bunker to make your own. Dark, tense and often genuinely frightening, with a dry sense of humour buried in the voice acting.
Tense, Fast-paced
85% of 560 Steam reviews are positivePlayers online now: 23$14.99Stranded: Alien Dawn
A small group of survivors, one unforgiving alien planet, and you in charge. Build them a base, keep them fed and sane, and hold the walls when the local wildlife comes knocking. Every run plays out differently, and every decision costs something. A colony sim where the planet is actively trying to ruin your day.
Tense
83% of 9,925 Steam reviews are positivePlayers online now: 537$34.99Vortex: The Gateway
Vortex: The Gateway is an open world survival horror game with two game modes. If you want to survive then be alert, sneak, build and fight. Meanwhile life back on Earth changes dramatically. What changes? You will get bits of information through your adventure. Prepare for the worst!
Tense
53% of 306 Steam reviews are positive$7.99Evil Mountains
Evil mountains is an open world survival game that combines aliens, horror, crafting, base building and tower defence. The game takes place at a remote place somewhere in the Himalayan mountains. Here you'll discover that aliens are real, and you are their prey
Tense
57% of 35 Steam reviews are positive$9.99Last Village
Arriving on a hunt in a small village, you become a witness to attack of alien forces on the ground, armed with a shotgun, you decide to repulse the alien intruders.
Tense, Fast-paced
84% of 32 Steam reviews are positive$9.99
Cheaper than When They Arrived
Space Zombies Invasion
Welcome to SZI Space Zombies Invasion. In this game, you control a human who has to dodge zombies and fight vs aliens.
100% of 1 Steam reviews are positive$1
Take On Mars
Take On Mars places you right in the middle of mankind’s most exciting undertaking.
55% of 1,754 Steam reviews are positivePlayers online now: 2$1.99
Mission: Aliens
Sergeant, last night we received a signal that an unknown aircraft of extraterrestrial origin had crashed in the taiga.
100% of 7 Steam reviews are positive$0.99
ALIENS INVADED OUR PLANET
Aliens Invaded Our Planet is a Multiplayer / CO-OP (Up to 6P) FPS & Arcade Style Action game, the game is about alien invasion in 1900s Richalley…
64% of 55 Steam reviews are positive$0.99
Us Against Aliens
Us Against Aliens is a survival shooter game on a spaceship that flies towards Earth.
91% of 11 Steam reviews are positive$1.99
Sol 0: Mars Colonization
Sol 0 is a real time strategy game where you establish the first Martian colony.
67% of 371 Steam reviews are positive$0.99
UFO: Afterlight
The story is situated on Mars. It starts where UFO: Aftermath left off and runs simultaneously with UFO: Aftershock.
70% of 372 Steam reviews are positivePlayers online now: 9$1.39
Marsmare: Alienation
Marsmare: Alienation is a thrilling adventure of an earthling kidnapped by malevolent aliens.
92% of 13 Steam reviews are positive$1.99
ROD: Revolt Of Defense
Explore a random generated space. Find artifacts and treasure maps. Build and develop your base on a flying platform.
80% of 526 Steam reviews are positive$0.99
Planet Invasion
A few alien friends have placed a bet on who can get to the center of the Solar System first.
$2.99
Farworld Pioneers
Explore an open world, sci-fi sandbox – in PVP, PVE, and co-op.
37% of 623 Steam reviews are positive$3.74
Hidden gems like When They Arrived
LIFE EFFECT Survival
A harsh open world after an alien invasion, seen from first or third person.
85% of 560 Steam reviews are positivePlayers online now: 23$14.99
Surviving Ceres
Explore a handcrafted survival game with an emphasis on crafting and base building.
87% of 116 Steam reviews are positive$9.99
Alien Horizon (Preview Alpha)
A sci-fi survival city builder set on an inhospitable alien planet.
87% of 208 Steam reviews are positivePlayers online now: 2Free
Signs of Life
Mine ore, build a base and piece together a crashed world in a 2D survival sandbox, alone or with a friend.
76% of 744 Steam reviews are positivePlayers online now: 131$9.74
Under A New Sun
Survive on a lush alien planet by hunting, crafting, building and sailing from island to island.
76% of 390 Steam reviews are positivePlayers online now: 22$12.59
Occupy Mars: The Game
Fix machines, wire up a base and keep your oxygen flowing on an open, red planet, alone or with friends in co-op.
68% of 2,746 Steam reviews are positivePlayers online now: 124$29.99
Stranded: Alien Dawn
A small group of survivors, one unforgiving alien planet, and you in charge.
83% of 9,925 Steam reviews are positivePlayers online now: 537$34.99
INFLUXIS
Explore a mesmerizing alien world, filled with deep bioluminescent wonders and horrors alike.
63% of 257 Steam reviews are positiveFree
Green Project
Wake from cryosleep to a fungus-choked Earth, then farm, craft and plant trees at your own pace until the world around you visibly turns green again.
80% of 1,434 Steam reviews are positivePlayers online now: 12$5.99
1000 days to escape
Only 1000 days left until the end of the world. You have to realize the largest space program ever to save as many people as you can.
84% of 369 Steam reviews are positive$4.99
The Rule of Land: Pioneers
This is a survival game. After the coronation, human beings had to move into the underground.
65% of 301 Steam reviews are positive$10.99
Andarilho
A backpack, a hostile little world, and everything you need to scavenge, craft, build and drive to stay alive.
65% of 1,207 Steam reviews are positivePlayers online now: 3$4.99
Newest games like When They Arrived
Signs of Life
Mine ore, build a base and piece together a crashed world in a 2D survival sandbox, alone or with a friend.
76% of 744 Steam reviews are positivePlayers online now: 131$9.74
Project Tomorrow
Wake on a ruined planet, terraform it back to life and fight off everything that wants it dead again.
94% of 160 Steam reviews are positivePlayers online now: 163$5.94
Wonderia
Survive, farm, build and morph on a procedurally generated alien planet, solo or with up to seven friends.
80% of 315 Steam reviews are positivePlayers online now: 15$13.99
Marsmare: Alienation
Marsmare: Alienation is a thrilling adventure of an earthling kidnapped by malevolent aliens.
92% of 13 Steam reviews are positive$1.99
EagleRoad:WorldRise
This is an open world 3D gunfight game based on the law of the jungle, which emphasizes the survival of the fittest.
91% of 22 Steam reviews are positive$9.99
LIFE EFFECT Survival
A harsh open world after an alien invasion, seen from first or third person.
85% of 560 Steam reviews are positivePlayers online now: 23$14.99
HUNTED
A sit 'n' survive set on board a spaceship. Aliens have made it inside, and you need to defend yourself.
91% of 11 Steam reviews are positiveFree
Occupy Mars: The Game
Fix machines, wire up a base and keep your oxygen flowing on an open, red planet, alone or with friends in co-op.
68% of 2,746 Steam reviews are positivePlayers online now: 124$29.99
INFLUXIS
Explore a mesmerizing alien world, filled with deep bioluminescent wonders and horrors alike.
63% of 257 Steam reviews are positiveFree
Surviving Mars: Pioneer
The Red Planet is vast, desolate, and utterly indifferent to your survival.
81% of 81 Steam reviews are positivePlayers online now: 2$24.99
Surviving Ceres
Explore a handcrafted survival game with an emphasis on crafting and base building.
87% of 116 Steam reviews are positive$9.99
Mars Survivor
After an asteroid catastrophe, your rocket ship crash-lands in the wilderness of Mars.
74% of 34 Steam reviews are positivePlayers online now: 1$5.99