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

Super Space Club
Single-player alternative to Redline Protocol — playable solo, no multiplayer required. Shares Action and Indie with Redline Protocol.
Super Space Club is a lo-fi arcade space shooter to chill to. Defend a vibrant galaxy as a club of misfit heroes and battle endless waves of spacecrafts to the tune of atmospheric beats. Outlast your enemies and vibe to the rhythm of the stars.
- 2

River Attack
Single-player alternative to Redline Protocol — playable solo, no multiplayer required. Shares Action and Indie with Redline Protocol.
River Attack is a shootting up style game 2D, which combines harmoniously colored scenes with aerial shooting battle! Evolve your ship to defeat an alien invasion that has the technology to control human combat vehicles. Will you be able to defeat an army of ships to save your girl and the planet?!
- 3

Gravitators
Single-player alternative to Redline Protocol — playable solo, no multiplayer required. Shares Action and Indie with Redline Protocol.
Gravitators is a twin stick shooter game where you pilot ships and complete mission objectives to secure the future of humankind. Defend the Earth and travel through the galaxy to repel a relentless alien invasion.
- 4

Crush The Rebellion!
Single-player alternative to Redline Protocol — playable solo, no multiplayer required. Shares Action and Indie with Redline Protocol.
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!
- 5

Cleared Hot
Single-player alternative to Redline Protocol — playable solo, no multiplayer required. Shares Action and Indie with Redline Protocol.
CLEARED HOT is a nostalgic helicopter shooter with satisfying physics and light tactical elements. Shoot, dodge, move your squad around the battlefield, and pick up almost anything with your rope and magnet.
- 6

Crimzon Clover World EXplosion
Single-player alternative to Redline Protocol — playable solo, no multiplayer required. Shares Action and Indie with Redline Protocol.
Prepare yourself for an insatiable rain of bullets, bombs, and beams in Crimzon Clover. Earn all the power-ups for an overpowered experience in the all new ARRANGE version.
- 7

Duralumin Wind
Single-player alternative to Redline Protocol — playable solo, no multiplayer required. Shares Action with Redline Protocol.
Pilot your helicopter to victory as your complete objectives, dodge missiles, and destroy your enemies. But don't forget to keep an eye on your fuel, ammunition, and health or you might not survive.
- 8

Galactic Wars EX
Single-player alternative to Redline Protocol — playable solo, no multiplayer required. Shares Action and Indie with Redline Protocol.
Galactic Wars EX is a pixel perfect co-op retro arcade shmup retrogaming experience for modern pcs