Single-player games like Infernal Radiation
Below are 17 single-player Steam games similar to Infernal Radiation, 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 Infernal Radiation page.
Ranked picks
- 1

Airstrife: Assault of the Aviators
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action and Indie with Infernal Radiation.
Use Aileron Rolling or Evading your enemies' attacks while having a realistic damage system. Use different planes with upgradable parts and numerous weapons you can mount to your planes to destroy your enemies. Fly solo or play with your friends and enjoy local coop. A modern re-invented classic.
- 2

Hell Throne
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action and Indie with Infernal Radiation.
A fast-paced action roguelite game with bullet hell elements, encounter based combat and high replayability. Make your way through monster infested realms as you pick and choose from a multitude of upgrades and abilities to create the meanest build possible!
- 3

Cuphead
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action and Indie with Infernal Radiation.
Cuphead is a classic run and gun action game heavily focused on boss battles. Inspired by cartoons of the 1930s, the visuals and audio are painstakingly created with the same techniques of the era, i.e. traditional hand drawn cel animation, watercolor backgrounds, and original jazz recordings.
- 4

Tiebreakers
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action with Infernal Radiation.
A SHONEN RUN N' GUN! Discover a heated run n' gun gameplay and challenging boss-fight tiebreaks. Shoot, Parry, and blast your way through intense encounters mastering a combat system about precision and movement. Every challenge is an opportunity to learn: push your limits, and come back stronger.
- 5

Destropolis
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action and Indie with Infernal Radiation.
Destropolis is a top-down shooter game with a fully destructible environment, hundreds of enemies and nuclear explosions. Fight a countless swarm of enemies. Tear them to pieces with bullets, lasers and explosions. Destroy as many of them as you can before they overwhelm you...
- 6

Nex Machina
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action and Indie with Infernal Radiation.
Nex Machina is an intense arcade style twin-stick shooter from Housemarque. Taking hints from both Robotron and Smash TV, Nex Machina focuses on pure action, voxel destruction and competition in the distant, cablepunk themed future.
- 7

The Bug Butcher
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action and Indie with Infernal Radiation.
A fast paced action shooter inspired by the arcade classic Super Pang! Use a wide selection of weapons and powerups to tear through increasingly challenging levels.
- 8

Jamestown
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action and Indie with Infernal Radiation.
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.
- 9

Undertale
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Indie and RPG with Infernal Radiation.
UNDERTALE! The RPG game where you don't have to destroy anyone.
- 10

Priest Simulator: Vampire Show
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action and Indie with Infernal Radiation.
A mockumental action game. Go forth and rock in the absolute weirdest and most messed up simulator in the history of sandbox shooters. Fully unprofessional English language version. This dub will have you in stitches.
- 11

Ultimate Summer
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action and Simulation with Infernal Radiation.
A mix of tower defense with classic shooter. Gather resources, place traps, build towers, and buy weapons to exterminate waves of United Forces of Heaven, Hell, Purgatory, Cthulhu, Carnivores and Aliens.
- 12

Booze Masters: Freezing Moonshine
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action and Indie with Infernal Radiation.
Freezing Moonshine is a unsettling first-person adventure game with elements of plant cultivation, puzzles, and lots of high-proof beverages. To survive, you'll need to gather harvests, take photos, and craft a wide variety of spirits.
- 13

Mercyful Flames: The Witches
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action and Indie with Infernal Radiation.
Experience a dark documentary based on the classic movie Häxan. The narrator will guide you through the spellbinding history of witchcraft. Focus, you are delving into the deepest abyss of black magic that spread panic in the Dark Ages.
- 14

Taxi Simulator
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Simulation with Infernal Radiation.
Become a taxi driver and experience for yourself the everyday life in such interesting profession. One might think that working behind a taxi wheel is a dull and boring task. But you couldn’t be more wrong! In Taxi Simulator you'll play as a shady rap driver and drive through the wildly urban areas.
- 15

Your Principal
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action and Indie with Infernal Radiation.
Do you see that old guy shouting and screaming? that's you the principal Being a Principal is not an easy task. you can be the meanest, sourest principal in history or not.
- 16

Pope Simulator
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Indie and Simulation with Infernal Radiation.
Pope Simulator features many themes from the fascinating history of the papacy in the second half of the 20th century. Inspiring adventure, political intrigue, moral dilemmas and many themes based on actual events.
- 17

Human Farm
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action and Indie with Infernal Radiation.
Welcome to Human Farm🐽 – an alternate, Orwellian world where Pigs became the dominant species. Humans are degraded to farmed meat. Create and develop your own slaughterhouse. Your goal: conquer and dominate the human meat industry. Millions of hungry snouts are waiting to be fed!