Single-player games like Infernal Radiation
Below are 15 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

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...
- 2

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.
- 3

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.
- 4

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.
- 5

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.
- 6

Arcade Mayhem Juanito
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action and Indie with Infernal Radiation.
Arcade Mayhem Juanito is a retro experience about arcade-hopping. Teleport into different video games, play with unique mechanics inspired by well-known arcade games, face stunningly animated bosses and join the fight against the clonocell invasion.
- 7

Assault Android Cactus+
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action and Indie with Infernal Radiation.
Assault Android Cactus is an intense arcade style twin stick shooter - pick from one of nine unique synthetic heroines and blast your way through overwhelming robots hordes to save the ship from its own workforce. Supports single player and local co-op game modes.
- 8

Outer Terror
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action and Indie with Infernal Radiation.
DON’T DIE as you assemble a ridiculous arsenal of weapons and desperately hold out against massive hordes of creatures pulled from a variety of classic horror genres reminiscent of 80s and 90s Golden Age comics and B-movies in this stylish action-packed arcade roguelite.
- 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

Priest Simulator: Heavy Duty
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action and Indie with Infernal Radiation.
Sandbox with a vampire priest in the leading role. Destroy shatanists and turn the devil's village into an oasis of christianism.
- 15

Thief Simulator 2 VR
Single-player alternative to Infernal Radiation — playable solo, no multiplayer required. Shares Action and Simulation with Infernal Radiation.
Steal smarter in full immersion. Plan, scout, break in, and escape—this time with your own hands in VR.