IMHO.

Single-player games like OMEGA PHENEX COMMENCED PROJECT SIX

Below are 8 single-player Steam games similar to OMEGA PHENEX COMMENCED PROJECT SIX, 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 OMEGA PHENEX COMMENCED PROJECT SIX page.

Ranked picks

  1. 1
    ARMED FRAME — Steam game cover

    ARMED FRAME

    Single-player alternative to OMEGA PHENEX COMMENCED PROJECT SIX — playable solo, no multiplayer required. Shares Action and Indie with OMEGA PHENEX COMMENCED PROJECT SIX.

    A fast-paced TPS & FPS where you control a mech in battle. Customize 12 parts: head, torso, arms, legs, booster, FCS, and 6 weapons. Weapon and frame colors are changeable. Use weapons, jump, boost up, run on walls, do rapid boosts, quick turns, and high boosts.

    ActionIndieSingle-playerSimilar games →
  2. 2
    GG Tanks — Steam game cover

    GG Tanks

    Single-player alternative to OMEGA PHENEX COMMENCED PROJECT SIX — playable solo, no multiplayer required. Shares Action and Indie with OMEGA PHENEX COMMENCED PROJECT SIX.

    A game to show your friends that, inside a tank, you are the best in arena battles.

    2025ActionIndieCasual4.99 USDSingle-playerSimilar games →
  3. 3
    MECH OPS 2092 — Steam game cover

    MECH OPS 2092

    Single-player alternative to OMEGA PHENEX COMMENCED PROJECT SIX — playable solo, no multiplayer required. Shares Action with OMEGA PHENEX COMMENCED PROJECT SIX.

    Customize your battle mech, pick contracts, and choose which side to fight for. Large-scale battles, deep customization, nonlinear storyline.

    ActionSimulationSingle-playerSimilar games →
  4. 4
    ExZeus™: The Complete Collection — Steam game cover

    ExZeus™: The Complete Collection

    Single-player alternative to OMEGA PHENEX COMMENCED PROJECT SIX — playable solo, no multiplayer required. Shares Action with OMEGA PHENEX COMMENCED PROJECT SIX.

    Ultra high-tech fighting robots are humanity’s last defense to repel alien forces who will stop at nothing to wipe our civilization from existence! Blast those aliens back to where they came from in these two action-focused high-flying 3D arcade style rail shooters!

    2021Action12.99 USDSingle-playerSimilar games →
  5. 5
    Perfect Plan — Steam game cover

    Perfect Plan

    Single-player alternative to OMEGA PHENEX COMMENCED PROJECT SIX — playable solo, no multiplayer required. Shares Action and Indie with OMEGA PHENEX COMMENCED PROJECT SIX.

    Enjoy uncapped health and deploy-able shields for intense action. "Perfect Plan" is a first-person shooter combining shoot 'em up and platforming. Take on a solo robot's mission to rob a bank and defeat Multiple crazy hard bosses while unlocking a variety of guns, special items and shield upgrades.

    2017ActionIndieAdventure12.99 USDSingle-playerSimilar games →
  6. 6
    PUNIHI LOADER 2 — Steam game cover

    PUNIHI LOADER 2

    Single-player alternative to OMEGA PHENEX COMMENCED PROJECT SIX — playable solo, no multiplayer required. Shares Action with OMEGA PHENEX COMMENCED PROJECT SIX.

    "PUNIHI LOADER 2" is customizable mecha third-person shooter in which the one-headed mysterious cute creature "Punihi" rides and fights in unique mecha. Customize your mecha by combining over 150 parts. You can also change the clothes of "Punihi". Create your own ultimate mecha.

    2023ActionEarly Access6.49 USDSingle-playerSimilar games →
  7. 7
    DAEMON X MACHINA — Steam game cover

    DAEMON X MACHINA

    Single-player alternative to OMEGA PHENEX COMMENCED PROJECT SIX — playable solo, no multiplayer required. Shares Action with OMEGA PHENEX COMMENCED PROJECT SIX.

    Pilot your fully customizable Arsenal mech and join your fellow mercenaries in defending humanity from the corrupted machines and gigantic robots in this post-apocalyptic action game!

    2020Action49.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    MOBILE SUIT GUNDAM SEED BATTLE DESTINY REMASTERED — Steam game cover

    MOBILE SUIT GUNDAM SEED BATTLE DESTINY REMASTERED

    Single-player alternative to OMEGA PHENEX COMMENCED PROJECT SIX — playable solo, no multiplayer required. Shares Action with OMEGA PHENEX COMMENCED PROJECT SIX.

    Become a pilot in the world of Mobile Suit Gundam SEED, for the first time available with English localization! Engage in thrilling, action-packed Gundam battles, complete missions, and tune up your newly acquired Mobile Suits!

    2025ActionRPGCasual29.99 USDDeck PlayableSingle-playerSimilar games →