Single-player games like Radiation Island
Below are 11 single-player Steam games similar to Radiation Island, 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 Radiation Island page.
Ranked picks
- 1
How to Survive 2
Single-player alternative to Radiation Island — playable solo, no multiplayer required. Shares Action and Adventure with Radiation Island.
Dead or Alive? Make up your mind, stranger. We don’t like that undead business here in Louisiana…Survive solo or with friends as you look to fulfill your basic needs of food, water and shelter, crafting your own tools and weapons while you secure your camp and face flesh hungry zombies.
- 2
How to Survive
Single-player alternative to Radiation Island — playable solo, no multiplayer required. Shares Action and Adventure with Radiation Island.
“A real Gem” – Destructoid at E3 “Offers a different experience for zombie game veterans” – Co-Optimus“Has a lot more going for it than smashing brains and gory, red goo ... With a surprisingly deep crafting system” – GamesRadarYou're shipwrecked on an isolated island, a desperate castaway in a total freakshow world. How will you survive?
- 3
Days Gone
Single-player alternative to Radiation Island — playable solo, no multiplayer required. Shares Action and Adventure with Radiation Island.
Ride and fight into a deadly, post pandemic America. Play as Deacon St. John, a drifter and bounty hunter who rides the broken road, fighting to survive while searching for a reason to live in this open-world action-adventure game.
- 4
METAL GEAR SURVIVE
Single-player alternative to Radiation Island — playable solo, no multiplayer required. Shares Action and Adventure with Radiation Island.
METAL GEAR SURVIVE builds upon MGSV’s stealth action gameplay with elements of exploration and survival creating a bold new experience. *An internet connection is required to play the game.
- 5
Frozen State
Single-player alternative to Radiation Island — playable solo, no multiplayer required. Shares Action and Indie with Radiation Island.
Frozen State is a brutal, survival game set in a world embraced by the man-made ice age meant to protect mankind from pestilent hybrids. Bitter cold and numbing fear are the constant companions in the journey through the retro-futuristic Frozen State world.
- 6
Grounded
Single-player alternative to Radiation Island — playable solo, no multiplayer required. Shares Action and Adventure with Radiation Island.
The world is a vast, beautiful and dangerous place – especially when you have been shrunk to the size of an ant. Can you thrive alongside the hordes of giant insects, fighting to survive the perils of the backyard?
- 7
Terraria
Single-player alternative to Radiation Island — playable solo, no multiplayer required. Shares Action and Indie with Radiation Island.
Dig, fight, explore, build! Nothing is impossible in this action-packed adventure game. Four Pack also available!
- 8
Terminus: Zombie Survivors
Single-player alternative to Radiation Island — playable solo, no multiplayer required. Shares Indie and Adventure with Radiation Island.
Terminus: Zombie Survivors is a 2D turn-based survival roguelike set during a zombie apocalypse. Each journey is unique, and every decision can mean the difference between life and death. Can you brave hunger, cold, and the undead in order to reach the Terminus and find salvation?
- 9
Cubic Odyssey
Single-player alternative to Radiation Island — playable solo, no multiplayer required. Shares Action and Adventure with Radiation Island.
Embark on a galactic journey in Cubic Odyssey, an open-world adventure where you explore vibrant planets, craft tools, build vehicles, and fight the Red Darkness. Uncover ancient mysteries, and shape a universe full of life, danger, and limitless possibilities!
- 10
Sky Gamblers: Storm Raiders
Single-player alternative to Radiation Island — playable solo, no multiplayer required. Shares Action and Indie with Radiation Island.
THIS IS THE ULTIMATE WWII AIR COMBAT GAME! You’ll participate in visceral dogfights, protect cities and fleets, bomb enemy structures and even fly through tunnels. Everything is set up in accurately recreated real life locations like Pearl Harbor, Coast of Dover, Midway, Germany and France.
- 11
Infinite Tanks
Single-player alternative to Radiation Island — playable solo, no multiplayer required. Shares Action and Indie with Radiation Island.
Infinite Tanks features exactly what the name suggests – huge content - never ending lines of modern combat vehicles, huge environments with realistic weather, online multiplayer and countless single player missions and drills.