IMHO.

Single-player games like Radical Rex

Below are 16 single-player Steam games similar to Radical Rex, 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 Radical Rex page.

Ranked picks

  1. 1
    First Samurai — Steam game cover

    First Samurai

    Single-player alternative to Radical Rex — playable solo, no multiplayer required. Shares Action and Adventure with Radical Rex.

    In ancient Japan, a young samurai watches as his people and his Master are massacred by the hands of the Demon King. He swears vengeance and invokes the power of the Witch... Thus begins the pursuit of the Demon King through space and time - a bloody crusade where there is no turning back...

    2021ActionAdventure11.99 USDSingle-playerSimilar games →
  2. 2
    Second Samurai — Steam game cover

    Second Samurai

    Single-player alternative to Radical Rex — playable solo, no multiplayer required. Shares Action and Adventure with Radical Rex.

    Experience the ultimate in martial arts mayhem as the Samurai confronts the Demon King in an all action adventure that's full of Eastern promise. Combining beat'em up combat with platform puzzling and awesomely evil level bosses, Second Samurai is a monster of a game!

    2022ActionAdventure10.99 USDSingle-playerSimilar games →
  3. 3
    New Joe & Mac - Caveman Ninja — Steam game cover

    New Joe & Mac - Caveman Ninja

    Single-player alternative to Radical Rex — playable solo, no multiplayer required. Shares Action and Adventure with Radical Rex.

    We’re back in the distant Past, when “Rock & Roll” was just about rocks and “Fast food”, a dinner that you couldn’t catch. 2 cave dudes named Joe & Mac live in a peaceful and cool village. Cool it was, until a bogus bunch of Neanderthal snatched all the village’s women!

    2022ActionAdventure4.99 USDSingle-playerSimilar games →
  4. 4
    Dino Run DX — Steam game cover

    Dino Run DX

    Single-player alternative to Radical Rex — playable solo, no multiplayer required. Shares Action with Radical Rex.

    DINOSAURS. PIXELS. PYROCLASTIC DOOM WALLS. MASSIVE INDIE CROSSOVERS. Dino Run DX has all of that and more. Come rediscover the original runner and escape extinction all over again.

    2015ActionIndieRacing5.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Tomb Raider: Anniversary — Steam game cover

    Tomb Raider: Anniversary

    Single-player alternative to Radical Rex — playable solo, no multiplayer required. Shares Action and Adventure with Radical Rex.

    Tomb Raider: Anniversary retraces Lara Croft's original genre-defining adventure — globe-trotting 3rd person action-adventure in pursuit of the legendary Scion artifact. Using an enhanced 'Tomb Raider: Legend' game engine, the graphics, technology and physics bring Lara's adventure and pursuit of a mystical artifact known only as the...

    2007ActionAdventure8.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    The Deadly Tower of Monsters — Steam game cover

    The Deadly Tower of Monsters

    Single-player alternative to Radical Rex — playable solo, no multiplayer required. Shares Action and Adventure with Radical Rex.

    Fire up your ray guns, crystal swords, and laser whips, and get ready for thrills and chills! With three incredible movie stars playing out decidedly B-level sci-fi exploits, Dick Starspeed, Scarlet Nova, and Robot will have you ready to jump off the side of the tower—right into adventure!

    2016ActionIndieAdventure4.49 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Downwell — Steam game cover

    Downwell

    Single-player alternative to Radical Rex — playable solo, no multiplayer required. Shares Action and Adventure with Radical Rex.

    Downwell is a curious game about a young person venturing down a well in search of untold treasures with only his Gunboots to protect him.

    2015ActionIndieAdventure2.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    Cave Story+ — Steam game cover

    Cave Story+

    Single-player alternative to Radical Rex — playable solo, no multiplayer required. Shares Action and Adventure with Radical Rex.

    Run, jump, shoot, fly and explore your way through a massive action-adventure reminiscent of classic 8- and 16-bit games.

    2011ActionIndieAdventure14.99 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    Krush Kill ‘N Destroy 2: Krossfire — Steam game cover

    Krush Kill ‘N Destroy 2: Krossfire

    Single-player alternative to Radical Rex — playable solo, no multiplayer required.

    Krush Kill 'N Destroy 2: Krossfire is a fast and furious post-apocalyptic real-time strategy game where you have to be quick or be dead. Play as one of three unique factions in the struggle to seek out and conquer oil fields to fuel your army.

    2020Strategy6.99 USDDeck PlayableSingle-playerSimilar games →
  10. 10
    The Dame Was Loaded — Steam game cover

    The Dame Was Loaded

    Single-player alternative to Radical Rex — playable solo, no multiplayer required. Shares Adventure with Radical Rex.

    An adventure set in the world of a 1940s private eye. Dames are trouble, but trouble is your business. In a sleazy world of corrupt officials, stolen diamonds, lust and murder, you must solve the case and stay alive.

    2019StrategyAdventure6.99 USDSingle-playerSimilar games →
  11. 11
    Nightshade — Steam game cover

    Nightshade

    Single-player alternative to Radical Rex — playable solo, no multiplayer required. Shares Action and Adventure with Radical Rex.

    The shadows of doom grow long as the ancient Egyptian villain Sutekh envelops Metro City with a wave of crime. But Sutekh's seedy underworld is about to be infiltrated by a superhero unlike the world has even seen. A superhero who can melt into the darkness like a phantom.

    2019ActionAdventure8.99 USDSingle-playerSimilar games →
  12. 12
    Power Punch II — Steam game cover

    Power Punch II

    Single-player alternative to Radical Rex — playable solo, no multiplayer required. Shares Action with Radical Rex.

    It's the year 2006. You're Mark "Tough Guy" Tyler and you've just defended your your Heavyweight title from the 9th consecutive time. After demolishing the best boxers on the planet. It's now time to face-off with the best in the Universe.

    2019Action8.99 USDDeck PlayableSingle-playerSimilar games →
  13. 13
    Alien Earth — Steam game cover

    Alien Earth

    Single-player alternative to Radical Rex — playable solo, no multiplayer required. Shares Action and Adventure with Radical Rex.

    The evil Raksha have taken over the Earth. They hunt humans for sport - and you're next! Can the hunted become the hunter....?

    2021ActionStrategyAdventure5.99 USDSingle-playerSimilar games →
  14. 14
    DethKarz — Steam game cover

    DethKarz

    Single-player alternative to Radical Rex — playable solo, no multiplayer required. Shares Action with Radical Rex.

    You're one of the elite racers chosen to compete at exotic locations around the world and beyond. Strap yourself into a fusion-powered racing machine for an explosive and exhilarating futuristic racing experience.

    2020ActionRacing6.99 USDSingle-playerSimilar games →
  15. 15
    Bop'N Wrestle — Steam game cover

    Bop'N Wrestle

    Single-player alternative to Radical Rex — playable solo, no multiplayer required. Shares Action with Radical Rex.

    Grapple your way to the top as Gorgeous Greg in this colorful classic, hailed as one of the first great pro wrestling games. BOP'N WRESTLE puts you in the ring with 10 of the meanest, baddest, biggest, toughest, ugliest pro wrestlers ever to fly off a turnbuckle!

    2020Action4.99 USDSingle-playerSimilar games →
  16. 16
    Penetrator — Steam game cover

    Penetrator

    Single-player alternative to Radical Rex — playable solo, no multiplayer required. Shares Action with Radical Rex.

    In this addictive side-scrolling shoot-em-up from 1982, your mission is to penetrate through four defence rings, and blow up an illegal cache of neutron bombs - an almost impossible feat! Enemy missiles and radar bases track your movements, and the landscape is as treacherous as your enemies.

    2022Action1.99 USDSingle-playerSimilar games →