IMHO.

Single-player games like TETRAGUN

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

Ranked picks

  1. 1
    PhaigeX: Hyperspace Survivors — Steam game cover

    PhaigeX: Hyperspace Survivors

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

    PhaigeX is a fast-paced "Bullet Heaven" space shooter, tasking the player to explore space sectors and contain a rising incursion of rogue AI-controlled units. Pilot a variety of ships, call in the support craft, and use a myriad of upgrades to lay down heavy firepower towards the enemy forces.

    2024ActionIndieCasual4.99 USDSingle-playerSimilar games →
  2. 2
    SALTWATER — Steam game cover

    SALTWATER

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

    Play as a pistol shrimp and survive waves of enemies while collecting pearls from oysters scattered throughout the map.

    2025ActionStrategyIndie3.99 USDSingle-playerSimilar games →
  3. 3
    SYNTHETIK 2 — Steam game cover

    SYNTHETIK 2

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

    SYNTHETIK 2 is a unrelenting tactical-shooter rogue-lite. Play alone or with friends. Loot powerful tech. Experience the next level in gun-play. Upgrade your androids to rival the machine gods!

    2021ActionIndieEarly Access19.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    Run Build Pew! — Steam game cover

    Run Build Pew!

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

    You’re being Bounty-Hunted! Run, Build your ship piece-by-piece and make it work with the parts you find, Destroy outposts and waves of fleets, and Pick your battles carefully to overcome your hunters in this Fast-Paced Top-Down Action Roguelite Shooter.

    2022ActionStrategyIndie2.99 USDDeck VerifiedSingle-playerSimilar games →
  5. 5
    Rogue: Genesia — Steam game cover

    Rogue: Genesia

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

    Walk upon a new world and slay foes endangering it. Rogue : Genesia is an action rogue-lite game, where you fight relentless hordes consisting of hundreds and thousands of monsters, make your build, break the balance, defeat bosses and save one of the many worlds.

    2025ActionStrategyRPG10.04 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Neon Sundown — Steam game cover

    Neon Sundown

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

    Neon Sundown is an extremely challenging arena-shooter that mixes fast-paced action with roguelite elements. Take on increasingly difficult arenas as you unlock new ships, upgrades, synergies, and more! Think you have what it takes to survive?

    2022ActionIndie4.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    X Invader — Steam game cover

    X Invader

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

    X Invader is an action roguelite where you hack into big corporations' servers. Use add-ons from fellow hackers to defeat monsters. Powerful, cute bosses guard these servers!

    2024ActionStrategyIndie4.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Gacha Fever — Steam game cover

    Gacha Fever

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

    Gacha Fever is a suvivors like in a cute and colorful universe. You will fight waves of monsters with various weapons, from the machine gun to the magical girl wand and the Bubble Tea Canon ! Just be careful of the area !

    2024ActionIndieRPG4.99 USDDeck VerifiedSingle-playerSimilar games →