IMHO.

Free games like Sin Zero

Below are 8 free-to-play Steam games similar to Sin Zero, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.

Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Sin Zero page.

Ranked picks

  1. 1
    Waves — Steam game cover

    Waves

    Free-to-play alternative to Sin Zero — no purchase or trial window. Shares Action with Sin Zero.

    Waves is an Arcade Twin-Stick Shooter that's all about High Scores. Build your combo and drop bombs in pursuit of Leaderboard dominance over seven game-modes!

    2011ActionIndieFreeDeck VerifiedFree to playSimilar games →
  2. 2
    Shape of Dreams: Prologue — Steam game cover

    Shape of Dreams: Prologue

    Free-to-play alternative to Sin Zero — no purchase or trial window. Shares Action with Sin Zero.

    《Shape of Dreams: Prologue》is a unique game that blends action roguelite with MOBA-style gameplay. Edit your character's Memories to create your own champion. Face all challenges alone or play with friends in up to 4-player co-op.

    2024ActionIndieAdventureFreeDeck PlayableFree to playSimilar games →
  3. 3
    Evil Egg — Steam game cover

    Evil Egg

    Free-to-play alternative to Sin Zero — no purchase or trial window. Shares Action with Sin Zero.

    Blast it all to hell.

    2025ActionFree To PlayFreeDeck VerifiedFree to playSimilar games →
  4. 4
    Relic Hunters Zero: Remix — Steam game cover

    Relic Hunters Zero: Remix

    Free-to-play alternative to Sin Zero — no purchase or trial window. Shares Action with Sin Zero.

    Relic Hunters Zero: Remix is a remaster of the FREE 1 million player hit game about blasting evil space ducks and turtles with tiny cute guns. It’s fast, it’s tactical, and feels deliciously smooth to play. Unlock new weapons, characters and relics to defeat the Ducan Commander!

    2015ActionIndieFree To PlayFreeDeck PlayableFree to playSimilar games →
  5. 5
    Himno — Steam game cover

    Himno

    Free-to-play alternative to Sin Zero — no purchase or trial window.

    Himno is a peaceful, 2D platformer game with an infinite number of beautiful procedurally generated maps. Take a breath, and relax.

    2019IndieAdventureFree To PlayFreeDeck PlayableFree to playSimilar games →
  6. 6
    Soulstone Survivors: Prologue — Steam game cover

    Soulstone Survivors: Prologue

    Free-to-play alternative to Sin Zero — no purchase or trial window. Shares Action with Sin Zero.

    Face the Lords of the Void and their endless minions, collect their Soulstones and become a god! In this Action Roguelite, unveil secret spells, craft mighty weapons, unlock multiple characters, discover game-breaking synergies and conquer the power of the void.

    2022ActionIndieRPGFreeDeck PlayableFree to playSimilar games →
  7. 7
    Fights in Tight Spaces (Prologue) — Steam game cover

    Fights in Tight Spaces (Prologue)

    Free-to-play alternative to Sin Zero — no purchase or trial window. Shares Action with Sin Zero.

    Play the first mission of Fights in Tight Spaces for free! A stylish blend of deck-building, turn-based tactics, and thrilling fight sequences in action-movie settings. Learn to balance your hand, momentum, and positioning to overcome the odds to defeat your adversaries. Full game OUT NOW.

    2020ActionStrategyFreeDeck PlayableFree to playSimilar games →
  8. 8
    EMPTY SHELL: PROLOGUE — Steam game cover

    EMPTY SHELL: PROLOGUE

    Free-to-play alternative to Sin Zero — no purchase or trial window. Shares Action with Sin Zero.

    EMPTY SHELL: PROLOGUE will throw you in a dark industrial environment, a secret facility on a japanese island. Each volunteer has signed a contract for a "recovery operation" without being privy to too many details. A tense roguelite survival horror with a top down perspective.

    2023ActionIndieAdventureFreeDeck PlayableFree to playSimilar games →