IMHO.

Single-player games like The Plunge Of Sludge

Below are 8 single-player Steam games similar to The Plunge Of Sludge, 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 The Plunge Of Sludge page.

Ranked picks

  1. 1
    Afloat — Steam game cover

    Afloat

    Single-player alternative to The Plunge Of Sludge — playable solo, no multiplayer required. Shares Indie with The Plunge Of Sludge.

    Afloat is an RPG dodging game with Roguelike elements where moving fast means staying alive! Sail on your trusty ice float, dodge quirky sea creatures, grab upgrades that shape your playstyle, meet charming travelers & unlock new playable characters and game modes as you sail toward warmer horizons.

    2026ActionIndieAdventure4.99 USDSingle-playerSimilar games →
  2. 2
    Freedom Squid Fighter — Steam game cover

    Freedom Squid Fighter

    Single-player alternative to The Plunge Of Sludge — playable solo, no multiplayer required. Shares Indie with The Plunge Of Sludge.

    Take control of a heavily armed squid and blast through destructible worlds in Freedom Squid Fighter. Soar through the air, tunnel through dirt and rock with powerful weaponry, and outmaneuver enemies across fully destructible landscapes.

    ActionIndieAdventureSingle-playerSimilar games →
  3. 3
    Wild Island — Steam game cover

    Wild Island

    Single-player alternative to The Plunge Of Sludge — playable solo, no multiplayer required. Shares Indie with The Plunge Of Sludge.

    You are stranded on a mysterious island, trying to escape. A sandbox where you stack items, craft synergies, and turn simple weapons into pure power. Experiment with runes, accessories, and pets. Discover the island’s mysteries and rebuild your sanctuary to uncover what the island truly wants.

    2026ActionIndieAdventureSingle-playerSimilar games →
  4. 4
    DRAGUN — Steam game cover

    DRAGUN

    Single-player alternative to The Plunge Of Sludge — playable solo, no multiplayer required.

    Run-and-gun roguelike about shooting through an army of dragons and their shadowy organization with an array of weapons, upgrades, and characters in randomized stage layouts.

    ActionSingle-playerSimilar games →
  5. 5
    Climbing Forever — Steam game cover

    Climbing Forever

    Single-player alternative to The Plunge Of Sludge — playable solo, no multiplayer required. Shares Indie with The Plunge Of Sludge.

    Climb in the hope of finding Forever, and fail finding it again and again, until you succeed or fall to despair. Learn from your mistakes and climb anew. You only need to find Forever once.

    2026ActionIndieAdventure6.79 USDSingle-playerSimilar games →
  6. 6
    Fast Food Wars — Steam game cover

    Fast Food Wars

    Single-player alternative to The Plunge Of Sludge — playable solo, no multiplayer required. Shares Indie with The Plunge Of Sludge.

    Fast Food Wars is a bullet-hell shoot'em up rogue-lite game in a procedural generated restaurant with random power ups, weapons. You play as a burger fighting to claim back all the invaded burger restaurant from other fast foods

    2026ActionIndieAdventureSingle-playerSimilar games →
  7. 7
    Hex Weaver — Steam game cover

    Hex Weaver

    Single-player alternative to The Plunge Of Sludge — playable solo, no multiplayer required. Shares Indie with The Plunge Of Sludge.

    Hex Weaver is a bullet-hell dungeon crawler. Collect runes and craft your own spell combinations freely. Every run delivers a fresh shooting experience—shred the dungeon's darkness with endless, evolving bullet patterns!

    ActionIndieAdventureSingle-playerSimilar games →
  8. 8
    OUTGUNNED! — Steam game cover

    OUTGUNNED!

    Single-player alternative to The Plunge Of Sludge — playable solo, no multiplayer required. Shares Indie with The Plunge Of Sludge.

    OUTGUNNED! is a fast-pased roguelike action-platformer set in a cyberpunk dystopia where cats are the dominant species. Build your own character with active and passive implants, perks, gear and unique playstyle each run!

    ActionIndieSingle-playerSimilar games →