Single-player games like Solo Defender
Below are 8 single-player Steam games similar to Solo Defender, 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 Solo Defender page.
Ranked picks
- 1

Sunfall '80
Single-player alternative to Solo Defender — playable solo, no multiplayer required. Shares Action with Solo Defender.
Pilot a lone ship across a stark, vector-style battlefield as the world steadily collapses into the sun. Combat focuses on precision: aim carefully, fire deliberately, and dodge incoming shots from autonomous enemy constructs that track and engage on sight.
- 2

Crush The Rebellion!
Single-player alternative to Solo Defender — playable solo, no multiplayer required. Shares Action and Indie with Solo Defender.
The galactic empire is under siege from the rebel scum in all directions! Fight through endless waves of rebel ships using all of the weapons and resources at your disposal as you execute your sole orders: to Crush The Rebellion!
- 3

Vector Seven
Single-player alternative to Solo Defender — playable solo, no multiplayer required. Shares Action with Solo Defender.
High speed arcade shooter built in the style of a lost 1980s vector game. Fight across looping battlefields, defend ground installations and survive relentless waves of enemy attacks!
- 4

When the Stars Threw Down Their Spears
Single-player alternative to Solo Defender — playable solo, no multiplayer required. Shares Action and Indie with Solo Defender.
When the Stars Threw Down Their Spears is a story-rich, retro space shooter inspired by DOS-era space games. Blast your way through fast-paced arcade combat, build out modular, upgradable ships, and explore a galaxy torn by war.
- 5

Stellar Courier
Single-player alternative to Solo Defender — playable solo, no multiplayer required. Shares Action and Simulation with Solo Defender.
Arcade space shooter. You are a courier with one package to deliver across a broken galaxy. Plane-like flight, fights with pirates, the old army and aliens in a 20+ mission story campaign. Pick your ship and mods between missions. No grind, no filler.
- 6

Alexus 2040
Single-player alternative to Solo Defender — playable solo, no multiplayer required. Shares Action with Solo Defender.
Relive that pure arcade thrill that you haven't experienced... in a long time! Load up on unique power-ups to create deadly combinations, unlock new ships with unique abilities, and defeat numerous bosses along the way.
- 7

Royal Odyssey
Single-player alternative to Solo Defender — playable solo, no multiplayer required. Shares Action and Indie with Solo Defender.
Royal Odyssey is a retro-style arcade space shooter where you pilot Prince Zayven’s ship through a deadly asteroid storm, blasting your way to survival.
- 8

Nova Swarm
Single-player alternative to Solo Defender — playable solo, no multiplayer required. Shares Action and Indie with Solo Defender.
Pick a ship, dive into readable bullet chaos, take down huge angry bosses, grab the bonus core you probably should have left alone, and chase one cleaner run in Nova Swarm.