IMHO.

Free games like Descent 3

Below are 8 free-to-play Steam games similar to Descent 3, 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 Descent 3 page.

Ranked picks

  1. 1
    STRAFTAT — Steam game cover

    STRAFTAT

    Free-to-play alternative to Descent 3 — no purchase or trial window. Shares Action with Descent 3.

    STRAFTAT is a 1v1/2v2 ONLINE first person SHOOTER with quick rounds in over 350 MAPS ; Including all WEAPONS, proximity chat and 4 players FFA.

    2024ActionFreeDeck PlayableFree to playSimilar games →
  2. 2
    The Lab — Steam game cover

    The Lab

    Free-to-play alternative to Descent 3 — no purchase or trial window.

    Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!

    2016Free To PlayFreeFree to playSimilar games →
  3. 3
    Warframe — Steam game cover

    Warframe

    Free-to-play alternative to Descent 3 — no purchase or trial window. Shares Action with Descent 3.

    Awaken as an unstoppable warrior and battle alongside your friends in this story-driven free-to-play online action game

    2013ActionRPGFree To PlayFreeDeck VerifiedFree to playSimilar games →
  4. 4
    SCP: Secret Laboratory — Steam game cover

    SCP: Secret Laboratory

    Free-to-play alternative to Descent 3 — no purchase or trial window. Shares Action with Descent 3.

    Deep within a secure underground facility, a sudden containment breach allows many of the secured anomalies to escape from their chambers. Assist the Foundation in re-securing the facility, help the Insurgency in their goal to capture it, or wreak havoc as an SCP in a frantic bid to escape.

    2017ActionIndieRPGFreeDeck PlayableFree to playSimilar games →
  5. 5
    Splitgate — Steam game cover

    Splitgate

    Free-to-play alternative to Descent 3 — no purchase or trial window. Shares Action with Descent 3.

    Splitgate is a free-to-play, fast-paced multiplayer shooter that features player-controlled portals. This sci-fi shooter takes the FPS genre to a new dimension with its portal mechanics, delivering high-flying, multi-dimensional combat.

    2019ActionIndieFree To PlayFreeFree to playSimilar games →
  6. 6
    PlanetSide 2 — Steam game cover

    PlanetSide 2

    Free-to-play alternative to Descent 3 — no purchase or trial window. Shares Action with Descent 3.

    PlanetSide 2 is an all-out planetary war, where thousands of players battle as one across enormous continents. Utilize infantry, ground and air vehicles, and teamwork to destroy your enemies in this revolutionary first-person shooter on a massive scale.

    2012ActionMassively MultiplayerFree To PlayFreeDeck PlayableFree to playSimilar games →
  7. 7
    Sven Co-op — Steam game cover

    Sven Co-op

    Free-to-play alternative to Descent 3 — no purchase or trial window. Shares Action with Descent 3.

    Sven Co-op is a co-operative game originally based around Valve Software's Half-Life. In this game players must work together against computer controlled enemies and solve puzzles as a team.

    2016ActionIndieFree To PlayFreeDeck PlayableFree to playSimilar games →
  8. 8
    MechWarrior Online™ Legends — Steam game cover

    MechWarrior Online™ Legends

    Free-to-play alternative to Descent 3 — no purchase or trial window. Shares Action with Descent 3.

    MechWarrior Online™ Legends is a tactical, 'Mech-based online shooter set in the vast BattleTech Universe. Assume the role of an elite MechWarrior, piloting powerful BattleMechs, fighting for supremacy over the Inner Sphere.

    2015ActionStrategySimulationFreeDeck PlayableFree to playSimilar games →