Single-player games like Steel Alcimus
Below are 15 single-player Steam games similar to Steel Alcimus, 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 Steel Alcimus page.
Ranked picks
- 1
Asteroids... But Roguelite
Single-player alternative to Steel Alcimus — playable solo, no multiplayer required. Shares Action and Indie with Steel Alcimus.
Start off as a weak ship with a simple attack and fight through waves of enemies, earning currency in order to purchase upgrades for your ship. The never ending waves of enemies grow in number, power, and variety as you progress. Purchase upgrades to keep pace with them.
- 2
Dead End City
Single-player alternative to Steel Alcimus — playable solo, no multiplayer required. Shares Action and Indie with Steel Alcimus.
A post-apocalyptic arcade shooter. Collect fuel and dodge enemy fire as you fight back against the evil Scorpio gang. Mixes cars, shmups and themes that would have been right at home in 80's anime and arcades..
- 3
Marimoth
Single-player alternative to Steel Alcimus — playable solo, no multiplayer required. Shares Action and Indie with Steel Alcimus.
Marimoth is a short shoot 'em up that puts in control of a moth whose shots bounce off the walls. Calculate your aim, evade enemy attacks by learning their patterns and collect coins to power up.
- 4
Undercroft Warriors
Single-player alternative to Steel Alcimus — playable solo, no multiplayer required. Shares Action and Indie with Steel Alcimus.
Crush the forces of hell and get a high score in this addictive, action-packed, arcade-inspired twin-stick shooter!
- 5
Rolling Bird
Single-player alternative to Steel Alcimus — playable solo, no multiplayer required. Shares Action and Indie with Steel Alcimus.
Rolling Bird is a retro arcade shooter, heavily inspired by Namco's 1986 classic 'Rolling Thunder'.
- 6
.Decluster & .Decluster Zero
Single-player alternative to Steel Alcimus — playable solo, no multiplayer required. Shares Action and Indie with Steel Alcimus.
The vertical scrolling shooter game '.Decluster' and its sequel '.Decluster Zero' are now available in one package.
- 7
In The Valley of Death -Prologue-
Single-player alternative to Steel Alcimus — playable solo, no multiplayer required. Shares Action and Indie with Steel Alcimus.
In the Valley of Death is a color-based hack and slash twin-stick shooter, where the player controls Red and Blue as they dash, slash, and shoot their way through challenging levels as they attempt to make it to the Valley of Death.
- 8
Warcat Parade
Single-player alternative to Steel Alcimus — playable solo, no multiplayer required. Shares Action and Indie with Steel Alcimus.
Catboy in a bullet hell! Nyan, nyan, pew pew pew!
- 9
Golden Hornet
Single-player alternative to Steel Alcimus — playable solo, no multiplayer required. Shares Action and Indie with Steel Alcimus.
Golden Hornet is a retro style twin-stick shooter. Become a pilot of the multipurpose helicopter 'Golden Hornet' — rescue hostages and destroy enemy outposts.
- 10
Frantic Dimension
Single-player alternative to Steel Alcimus — playable solo, no multiplayer required. Shares Action and Indie with Steel Alcimus.
Frantic Dimension is a retro twin-stick shooter inspired by the earliest twin-sticks, 'Space Dungeon' and 'Robotron 2084'. Never stop moving and shooting... or you'll die.
- 11
Offendron Warrior
Single-player alternative to Steel Alcimus — playable solo, no multiplayer required. Shares Action and Indie with Steel Alcimus.
Offendron Warrior is a retro arcade that combines shooting and defense. Your objective is saving Offendron civilians in the planets from the group of enemies, who are trying to spread a virus that turns Offendrons into mindless killing machines and eventually destroy the whole planet.
- 12
Pentasma
Single-player alternative to Steel Alcimus — playable solo, no multiplayer required. Shares Action and Indie with Steel Alcimus.
Pentasma is a side-scrolling arcade shooter inspired by Williams Electronics' 1981 classic 'Defender'. Protect The terraforming Humanoids from the deadly Aliens and raid the Alien planets to keep the galaxy peaceful!
- 13
Hornet Virus: Steel Alcimus II
Single-player alternative to Steel Alcimus — playable solo, no multiplayer required. Shares Action and Indie with Steel Alcimus.
Hornet Virus: Steel Alcimus II is a sequel of Steel Alcimus inspired by various 1980-1990s' 3D computer games. Pilot the deadliest helicopter in this action-packed 3D game. Destroy the targets, rescue the hostages, and capture the enemy buildings to save the world!
- 14
Xentron Attack
Single-player alternative to Steel Alcimus — playable solo, no multiplayer required. Shares Action and Indie with Steel Alcimus.
Xentron Attack is a multi-directional shooter. The evil alien forces called Xentron have invaded your galaxy and spreading dangerous meteors and missiles in the space. Fight with smart enemies who calculates your movements. Turn your ship precisely and use the borderless space wisely.
- 15
Devileader
Single-player alternative to Steel Alcimus — playable solo, no multiplayer required. Shares Action and Indie with Steel Alcimus.
Devileader, a fearsome space demon who once have destroyed countless planets of the solar system is about to be resurrected by his minions and fanatics, who want to bring chaos to the universe. Pilot the agile space interceptor Deviship and survive the terror of this demon lord.