IMHO.

Single-player games like PHOSPHOR

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

Ranked picks

  1. 1
    HIRUN — Steam game cover

    HIRUN

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

    HIRUN is an absolute banger of cyberpunk action roguelite where you blast, dash, and drift through neon-drenched hordes. Stack insane upgrades, unlock dope characters, and slash through deadly bosses. The OVERLORD awaits you. Die, rewire, and dive right back into the grid. Can you survive the rave?

    2026ActionIndieCasualSingle-playerSimilar games →
  2. 2
    Blackfall: Cyborgs Down — Steam game cover

    Blackfall: Cyborgs Down

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

    Deploy to a war-torn sci-fi island in Blackfall: Cyborgs Down, a high-intensity third-person looter shooter. Customize 18 Valor Cyborgs across 4 classes, master 60+ weapon models, and a 67-node skill tree. Then, trigger the turn-based 6v6 Prime Battle mode to collect and upgrade heavy mechs.

    2026ActionStrategyIndieSingle-playerSimilar games →
  3. 3
    Neon Armada - Solar Storm — Steam game cover

    Neon Armada - Solar Storm

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

    A top-down arena roguelite you can learn in one wave and spend a hundred hours mastering. Waves close in from every edge; the shop between them decides what you become. 32 ships, 28 weapons, 115 mods to combine — then endless mode, where the caps come off.

    2026ActionSingle-playerSimilar games →
  4. 4
    Re:Rite — Steam game cover

    Re:Rite

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

    Transform from a tiny, scrappy survivor into a skyscraper-sized Kaiju, as you fight through swarms of enemies in this chaotic PvE game. Hack-and-slash through hordes of spider-bots, clear through crowds with bullet-hell ranged weapons, and even team up with up to 3 friends in online co-op.

    ActionStrategyRPGSingle-playerSimilar games →
  5. 5
    Broken Orbits — Steam game cover

    Broken Orbits

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

    Broken Orbits is a fast-paced 1–4 player co-op space-combat game. Tear through hostile fleets, loot wild weapons and prototype effects, create devastating loadout combinations, and fight through a complete three-chapter campaign against the Ancients.

    2026ActionIndieSingle-playerSimilar games →
  6. 6
    PROTOCOL: VOID  — Steam game cover

    PROTOCOL: VOID

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

    PROTOCOL: VOID CONTRACT is a cyberpunk top-down action RPG for 1–4 players. Take on dangerous contracts, fight hostile systems, collect randomized weapons and cyberware, shape powerful builds, and upgrade your gear to survive deadlier missions.

    2026ActionIndieRPGSingle-playerSimilar games →
  7. 7
    DartPotato — Steam game cover

    DartPotato

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

    You start as a potato. The utensils have unionized and they want you diced. DartPotato is a top-down roguelike where you dash, dodge, and dart your way through 50 cities as five different food types each with three different classes, building absurd loadouts to avoid becoming dinner.

    2026ActionIndie3.99 USDSingle-playerSimilar games →
  8. 8
    Destropolis 2 — Steam game cover

    Destropolis 2

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

    Hordes of red cube enemies. Bullets, lasers and nukes. Cities to raze to the ground.

    ActionSingle-playerSimilar games →