IMHO.

Single-player games like XENOCIDE PROTOCOL

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

Ranked picks

  1. 1
    Bulletreign: Survivors — Steam game cover

    Bulletreign: Survivors

    Single-player alternative to XENOCIDE PROTOCOL — playable solo, no multiplayer required. Shares Early Access with XENOCIDE PROTOCOL.

    Top-down military bullet hell survivor. Drive armored vehicles behind enemy lines, rescue prisoners, fuse devastating weapons, and push forward. 25 weapons, 9 fusions, 6 crew members. Every run is a new offensive.

    2026ActionEarly AccessSingle-playerSimilar games →
  2. 2
    Cosmic Flesh: Overdrive — Steam game cover

    Cosmic Flesh: Overdrive

    Single-player alternative to XENOCIDE PROTOCOL — playable solo, no multiplayer required.

    Defend the galaxy from endless cosmic horrors. Dash and blast with fast, burst-based piloting, unleash powerful overdrives, evolve your ship with each unique run, and push your skills to the limit.

    ActionIndieSingle-playerSimilar games →
  3. 3
    Chemical Combat — Steam game cover

    Chemical Combat

    Single-player alternative to XENOCIDE PROTOCOL — playable solo, no multiplayer required. Shares Early Access with XENOCIDE PROTOCOL.

    Combine chemicals, prepare potions, and battle hordes of mythical monsters in this action-packed, chemistry-themed roguelike. You'll fight your way through a procedurally-generated science lab, exploding endless enemies and solving various puzzles, all to earn coins and upgrade your equipment.

    2025ActionIndieEarly Access8.99 USDSingle-playerSimilar games →
  4. 4
    Nano Squadron — Steam game cover

    Nano Squadron

    Single-player alternative to XENOCIDE PROTOCOL — playable solo, no multiplayer required.

    Manage your shields, evolve your ship, defend Earth. Nano Squadron is a top-down space roguelite where every run brings new upgrades and every mistake leaves you exposed.

    2026ActionIndie4.79 USDSingle-playerSimilar games →
  5. 5
    Deep Breach — Steam game cover

    Deep Breach

    Single-player alternative to XENOCIDE PROTOCOL — playable solo, no multiplayer required.

    Deploy orbital defenses, fuse experimental turret technologies, and engineer devastating weapon builds in a tactical sci-fi horde survival roguelike. Break shields, shred armor, and adapt to evolving bio-corrupted swarms alongside a damaged tactical AI.

    2026ActionIndieRPGSingle-playerSimilar games →
  6. 6
    Space Vikings — Steam game cover

    Space Vikings

    Single-player alternative to XENOCIDE PROTOCOL — playable solo, no multiplayer required.

    Pillage and plunder across the galaxy as part of a crew of Space Vikings in this sci-fi roguelite bullet hell dungeon crawler. Find exotic weapons, upgrade them with powerful augments, explore mysterious alien planets, and unleash viking vengeance on their inhabitants.

    2023ActionIndie2.99 USDSingle-playerSimilar games →
  7. 7
    Kuiper Belt Survivor — Steam game cover

    Kuiper Belt Survivor

    Single-player alternative to XENOCIDE PROTOCOL — playable solo, no multiplayer required. Shares Early Access with XENOCIDE PROTOCOL.

    Kuiper belt survivor is an arcade style bullet heaven, where every run is endless. It brings a unique spin to the bullet heaven genre by making every part of the players weapon arsenal customizable with well over 10,000 unique weapons to build, and unique stats for every enemy.

    2024ActionStrategyIndie9.99 USDSingle-playerSimilar games →
  8. 8
    Menacetide — Steam game cover

    Menacetide

    Single-player alternative to XENOCIDE PROTOCOL — playable solo, no multiplayer required. Shares Early Access with XENOCIDE PROTOCOL.

    Menacetide is a top-down sci-fi shooter where every second counts and every upgrade could mean the difference between extinction and survival. Dodge, destroy, and dominate as you unravel the mysterious forces behind a tide of chaos.

    2026ActionIndieEarly Access5.35 USDSingle-playerSimilar games →