Single-player games like Not Now, Aliens!
Below are 11 single-player Steam games similar to Not Now, Aliens!, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Not Now, Aliens! page.
Ranked picks
- 1

Surviving Day!
Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie and Adventure with Not Now, Aliens!.
Moddable and Hostable as a server for others to join and adventure, build, or fight. Jump into a new voxel game that is as powerful as it is fun! Experience a new level of detail and special features that keep the game interesting and fun.
- 2

Death Imminent
Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie and Adventure with Not Now, Aliens!.
Explore a planetary station lost in the far reaches of the Universe as crew members awakened from cryosleep. Work together to uncover the causes of what is happening and, if you’re lucky, survive and escape from the depths of this man-made hell.
- 3

2 FAST 4 YOU
Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie with Not Now, Aliens!.
Race through challenging levels and annihilate killer bots. Master your movement to create your own fastest paths to the finish line. Use unique abilities to speedrun your way to the top of the leaderboards. Catch and banish the evil folder - your cat’s life depends on it!
- 4

The Islet & Leviathan
Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie and Adventure with Not Now, Aliens!.
A healing and wonderful ecological exploration survival game that includes elements of collection and construction.
- 5

Pathless Woods
Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie and Adventure with Not Now, Aliens!.
Embark on a cozy open-world survival journey inspired by ancient China's heritage. Gather resources, cultivate crops, build your dream home, and defend it from marauders. Team up with friends to explore and uncover a world where adventure meets serenity.
- 6

VirtualSociety
Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie and Adventure with Not Now, Aliens!.
VirtualSociety is a creative life sim where you build your own worlds, customize their residents, and design how they interact. Create the places your stories need, play as your characters, and share your worlds with friends.
- 7

Factory Island
Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie with Not Now, Aliens!.
Factory Island is an experimental game built to display 3D worlds inside a 2D renderer. Explore procedurally generated maps, build voxel structures, invite your friends to multiplayer, experiment with water and simple electronics, fight creatures and create mods for this game-engine project.
- 8

SurvivalEXtreme
Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie with Not Now, Aliens!.
Enter a world devastated by the 2050 apocalypse. Fifty years later, humanity has returned… The war to reclaim Earth has begun, and only the bravest will be able to face the demons that now rule it. The world has fallen. Now it's your turn to rise.
- 9

iDigging
Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie and Adventure with Not Now, Aliens!.
In iDigging, you’ll balance treasure hunting, home improvement, and the strategy of hiding from curious neighbors and authorities. Upgrade, dig, and create your best life despite all the challenges!
- 10

Find Cats With Friends
Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie with Not Now, Aliens!.
Find Cats With Friends - gather friends, search the island for 100 mischievous cats, and bring them back in this cooperative multiplayer quest!
- 11

Move Together
Single-player alternative to Not Now, Aliens! — playable solo, no multiplayer required. Shares Indie with Not Now, Aliens!.
A cooperative game for 5 players! Pack items into car trunks across various locations, solving puzzles. All items must fit so the doors can close. Hunt for secrets, race against time with friends or solo, and become the best!