Single-player games like What's Outside
Below are 9 single-player Steam games similar to What's Outside, 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 What's Outside page.
Ranked picks
- 1
Space War: Infinity
Single-player alternative to What's Outside — playable solo, no multiplayer required. Shares Action and Indie with What's Outside.
Vertical semi-procedural shmup with upgrades, real-time enemy waves, and infinite replayability. Level up your ship, unlock 20+ weapons, defeat 5 bosses, and survive endless bullet-hell combat.
- 2
AstroWings: Space War
Single-player alternative to What's Outside — playable solo, no multiplayer required. Shares Action and Indie with What's Outside.
"Astro Wings: Space War" is a retro style, exciting and authentic bullet hell, space shooting game.This game brings you the thrill, urgency and fantastic experience of an authentic arcade shooting game.
- 3
Blast'N Bounty
Single-player alternative to What's Outside — playable solo, no multiplayer required. Shares Action and Indie with What's Outside.
Blast’N Bounty is a vertical scrolling shoot’em up featuring 8 stages players can tackle in the order of their choosing. Cruise through a crazy solar system in a mix of pixel art and low poly 3D with action that’s easy to learn but tough to master!
- 4
Always Surrender
Single-player alternative to What's Outside — playable solo, no multiplayer required. Shares Action with What's Outside.
Battle a never ending swarm of enemies, but be sure to surrender before you die...
- 5
CoreShot
Single-player alternative to What's Outside — playable solo, no multiplayer required. Shares Action and Indie with What's Outside.
CoreShot is a classic arcade style space shooter, where you pilot the spacecraft HonestWing to destroy the cores of evil. As you soar through enemy spacecraft, psychic pyramids, and grim castles, you will be tested against enemies with a variety of attack styles and epic boss battles. Blast away
- 6
Shooting Blaster Big Bang Boom
Single-player alternative to What's Outside — playable solo, no multiplayer required. Shares Action and Indie with What's Outside.
Are you gonna shoot? YES! Are you gonna blast? YES! Are you gonna make a big bang? YES! Are you gonna make a big boom? YES! So what do you get? Shooting Blaster Big Bang Boom! Come have some fun, it's Good Time time!
- 7
COSMIC STRIKE - The Last Sub Sector
Single-player alternative to What's Outside — playable solo, no multiplayer required. Shares Action and Strategy with What's Outside.
Unleash the fury of giant capital ship combat and conquer the stars!
- 8
Blasteroids
Single-player alternative to What's Outside — playable solo, no multiplayer required. Shares Action and Strategy with What's Outside.
Blast your way through waves of space debris in order to reach what is waiting for you on the other side. Find your fighting style with multiple unlockable ships in this fast paced space adventure!
- 9
Bush Dog
Single-player alternative to What's Outside — playable solo, no multiplayer required. Shares Action and Strategy with What's Outside.
Fight the timer to herd variety of different animals like two different sheeps, alpacas, chickens and cows. On unique maps with each round adding more animals.