Single-player games like Er-Spectro
Below are 14 single-player Steam games similar to Er-Spectro, 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 Er-Spectro page.
Ranked picks
- 1

Space War: Infinity
Single-player alternative to Er-Spectro — playable solo, no multiplayer required. Shares Action and Indie with Er-Spectro.
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

LUFTRAUSERS
Single-player alternative to Er-Spectro — playable solo, no multiplayer required. Shares Action and Indie with Er-Spectro.
The skies are aflame and the seas will overflow with wreckage in Vlambeer’s stylish arcade shooter LUFTRAUSERS! Take to the skies in customized fighter planes to battle battleships, submarines, and rival aces for glory, honor, and high scores.
- 3

Bleed 2
Single-player alternative to Er-Spectro — playable solo, no multiplayer required. Shares Action and Indie with Er-Spectro.
Bleed 2 is a relentless arcade action game featuring air-dodging, bullet-reflecting, and tons of bosses. Now with randomly-generated levels and daily challenges, too!
- 4

Jamestown
Single-player alternative to Er-Spectro — playable solo, no multiplayer required. Shares Action and Indie with Er-Spectro.
Jamestown: Legend Of The Lost Colony is a neo-classical top-down shooter for up to 4 players, set on 17th-century British Colonial Mars. It features all the intensity, depth, and lovingly handcrafted pixels of a classic arcade shooter, with a modern twist: deeply-integrated cooperative gameplay.
- 5

Mirage Feathers
Single-player alternative to Er-Spectro — playable solo, no multiplayer required. Shares Action and Indie with Er-Spectro.
「Maybe one day, I won't have to fight when I fly.」
- 6

Super Time Force Ultra
Single-player alternative to Er-Spectro — playable solo, no multiplayer required. Shares Action and Indie with Er-Spectro.
Super Time Force Ultra is an insane platformer filled with robots and dinosaurs and fun and time travel... sometimes all at the same time!
- 7

Ikaruga
Single-player alternative to Er-Spectro — playable solo, no multiplayer required. Shares Action and Indie with Er-Spectro.
Shoot! Dodge! and... Get Hit!? "Ikaruga" is a vertical shoot 'em up that features an unique polarity-switching gameplay. Switch the ship's polarity and "get hit and absorb" enemy bullets! Achieve High Score with the chain bonus!
- 8

Crimzon Clover WORLD IGNITION
Single-player alternative to Er-Spectro — playable solo, no multiplayer required. Shares Action and Indie with Er-Spectro.
Prepare yourself for an insatiable rain of bullets, bombs, and beams in Crimzon Clover. From Japanese indie developer Yotsubane, this retro top-down shooter is a wild ride you won't want to miss out on.
- 9

Galactic Lords
Single-player alternative to Er-Spectro — playable solo, no multiplayer required. Shares Action and Indie with Er-Spectro.
Experimental indie strategy game. Lead the group of Galactic Lords through 7 levels to discover the origin of a world-wide menace!
- 10

Nogibator: Way Of Legs
Single-player alternative to Er-Spectro — playable solo, no multiplayer required. Shares Indie with Er-Spectro.
(Tower Defence + Runner) / 2
- 11

Walhall
Single-player alternative to Er-Spectro — playable solo, no multiplayer required. Shares Action and Indie with Er-Spectro.
In this game you have to defeat just a single boss! Who knows though, perhaps it's not that simple?
- 12

Drill Arena
Single-player alternative to Er-Spectro — playable solo, no multiplayer required. Shares Action and Indie with Er-Spectro.
Fight in a brutal battle between robots with drills. In the arena there are only you and your opponents. Only the most sturdy and agile robot will survive!
- 13

ШПМЛ5 (ShPML5)
Single-player alternative to Er-Spectro — playable solo, no multiplayer required. Shares Indie with Er-Spectro.
Net-art group Kreguzda presents. Tomorrow is the Hundred-Fivehundred-First lunar day. This day is good for fasting. Do not eat anything among the lines of: dairy, fried, boiled, saltcium, iodine, mercury, plutonium, chebureks 2D, chebureks 3D, pies with HTML and other useful substances. Stay healthy!
- 14

Cybxus Heart
Single-player alternative to Er-Spectro — playable solo, no multiplayer required. Shares Action and Indie with Er-Spectro.
Cybxus Hearts inspired by classic Japanese shooting games. This is a game where you control three different characters at the same time.