IMHO.

Single-player games like OVERHEAT PROTOCOL

Below are 8 single-player Steam games similar to OVERHEAT PROTOCOL, 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 OVERHEAT PROTOCOL page.

Ranked picks

  1. 1
    HEATSINK — Steam game cover

    HEATSINK

    Single-player alternative to OVERHEAT PROTOCOL — playable solo, no multiplayer required. Shares Action and Indie with OVERHEAT PROTOCOL.

    A first-person roguelite where standing still will surely get you killed — this is a fast fps shooter with several mechanics that force you to keep moving and punishes you for staying inert

    2026ActionIndieSingle-playerSimilar games →
  2. 2
    Chthonic — Steam game cover

    Chthonic

    Single-player alternative to OVERHEAT PROTOCOL — playable solo, no multiplayer required. Shares Action and Indie with OVERHEAT PROTOCOL.

    Descend through nine ever-changing levels of a living nightmare, master a weapon that grows with you, and face colossal demons to a soundtrack that comes alive as you play.

    ActionIndieSingle-playerSimilar games →
  3. 3
    Project: Ascent — Steam game cover

    Project: Ascent

    Single-player alternative to OVERHEAT PROTOCOL — playable solo, no multiplayer required. Shares Action and Indie with OVERHEAT PROTOCOL.

    Become an unstoppable force of destruction as you climb an endless tower of darkness. Project: Ascent is a fast-paced boomer shooter roguelite with retro graphics, insane power-up synergies, and an evolving arsenal of weapons.

    ActionIndieSingle-playerSimilar games →
  4. 4
    Lunarift — Steam game cover

    Lunarift

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

    DESCEND. BUILD. EXTRACT. Lunarift is a single-player roguelite FPS set inside a lunar station torn open by a dimensional rift. Fight through shifting sectors, turn salvaged technology into lethal builds, and choose when to push deeper or escape with what you found.

    2027ActionAdventureSingle-playerSimilar games →
  5. 5
    Arena 2006 — Steam game cover

    Arena 2006

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

    Sci-fi shooter inspired by the golden '06 era. Forget the waiting queues, microtransactions, 60gb patches. We're here to frag.

    2026ActionSingle-playerSimilar games →
  6. 6
    Dead Sector: Rogue — Steam game cover

    Dead Sector: Rogue

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

    Dead Sector: Rogue is a fast-paced FPS roguelite. Fight through monster-infested station arenas, combine experimental weapons, active abilities, and powerful perks to create unique builds. Choose one of the pre-built classes or create your own, and adapt your strategy with every run.

    ActionSingle-playerSimilar games →
  7. 7
    GROUND-UNBOUND — Steam game cover

    GROUND-UNBOUND

    Single-player alternative to OVERHEAT PROTOCOL — playable solo, no multiplayer required. Shares Action and Indie with OVERHEAT PROTOCOL.

    GROUND-UNBOUND is a procedurally generated, high-intensity movement shooter with a retro wave art style. It features roguelike mechanics with a number of skills, guns and abilities to play with, including a variety of enemy types. Created during the 7-Day BigFry Game Jam, updated for steam release.

    2021ActionIndie4.99 USDSingle-playerSimilar games →
  8. 8
    Seth — Steam game cover

    Seth

    Single-player alternative to OVERHEAT PROTOCOL — playable solo, no multiplayer required. Shares Action and Indie with OVERHEAT PROTOCOL.

    Become Seth, god of storms, and crush Apophis’s legions in a fast-paced roguelite FPS blending Egyptian mythology with science fiction. Fast combat, random challenges, and divine power in every run.

    2026ActionIndie12.99 USDDeck VerifiedSingle-playerSimilar games →