IMHO.

Free games like Expand & Exterminate: Terrytorial Disputes - Endless Base Defense

Below are 8 free-to-play Steam games similar to Expand & Exterminate: Terrytorial Disputes - Endless Base Defense, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.

Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Expand & Exterminate: Terrytorial Disputes - Endless Base Defense page.

Ranked picks

  1. 1
    Lily's Well — Steam game cover

    Lily's Well

    Free-to-play alternative to Expand & Exterminate: Terrytorial Disputes - Endless Base Defense — no purchase or trial window. Shares Indie with Expand & Exterminate: Terrytorial Disputes - Endless Base Defense.

    It is a rainy night in the Spring of 2005. Lily is left home alone after her Papa put her to bed. She is awoken by a cry for help outside her window. It is coming from the well. Help Lily gather rope to go down the well and save the poor soul trapped down there.

    2022IndieAdventureFree To PlayFreeDeck VerifiedFree to playSimilar games →
  2. 2
    The Riftbreaker: Prologue — Steam game cover

    The Riftbreaker: Prologue

    Free-to-play alternative to Expand & Exterminate: Terrytorial Disputes - Endless Base Defense — no purchase or trial window. Shares Strategy and Indie with Expand & Exterminate: Terrytorial Disputes - Endless Base Defense.

    The Riftbreaker: Prologue allows you to experience the events taking place before the story campaign of the main game. Explore an entirely new world. Gather resources. Build up a base. Defend yourself from thousands of alien creatures.

    2020ActionStrategyIndieFreeDeck PlayableFree to playSimilar games →
  3. 3
    Liquidators — Steam game cover

    Liquidators

    Free-to-play alternative to Expand & Exterminate: Terrytorial Disputes - Endless Base Defense — no purchase or trial window. Shares Indie with Expand & Exterminate: Terrytorial Disputes - Endless Base Defense.

    Chernobyl, USSR, 1986. Three nuclear plant workers go on a daring mission to prevent a radioactive fallout that would affect half of Europe. Every moment is permanent, and all is at stake.

    2020IndieAdventureSimulationFreeFree to playSimilar games →
  4. 4
    DFHack - Dwarf Fortress Modding Engine — Steam game cover

    DFHack - Dwarf Fortress Modding Engine

    Free-to-play alternative to Expand & Exterminate: Terrytorial Disputes - Endless Base Defense — no purchase or trial window. Shares Strategy with Expand & Exterminate: Terrytorial Disputes - Endless Base Defense.

    Extensions for Dwarf Fortress, including bugfixes, interface improvements, automation agents, design blueprints, modding building blocks, and other tools.

    2023StrategySimulationRPGFreeDeck PlayableFree to playSimilar games →
  5. 5
    Shape of Dreams: Prologue — Steam game cover

    Shape of Dreams: Prologue

    Free-to-play alternative to Expand & Exterminate: Terrytorial Disputes - Endless Base Defense — no purchase or trial window. Shares Indie with Expand & Exterminate: Terrytorial Disputes - Endless Base Defense.

    《Shape of Dreams: Prologue》is a unique game that blends action roguelite with MOBA-style gameplay. Edit your character's Memories to create your own champion. Face all challenges alone or play with friends in up to 4-player co-op.

    2024ActionIndieAdventureFreeDeck PlayableFree to playSimilar games →
  6. 6
    SCP – Containment Breach — Steam game cover

    SCP – Containment Breach

    Free-to-play alternative to Expand & Exterminate: Terrytorial Disputes - Endless Base Defense — no purchase or trial window. Shares Indie with Expand & Exterminate: Terrytorial Disputes - Endless Base Defense.

    A procedural first-person horror adventure. You are on your own after something goes terribly wrong in this top-secret containment facility. Collect items to aid in your escape and try to uncover the truth, as horror lurks behind every door. Can you make it out alive?

    2026ActionIndieAdventureFreeDeck PlayableFree to playSimilar games →
  7. 7
    Nazi Zombies — Steam game cover

    Nazi Zombies

    Free-to-play alternative to Expand & Exterminate: Terrytorial Disputes - Endless Base Defense — no purchase or trial window. Shares Indie and Early Access with Expand & Exterminate: Terrytorial Disputes - Endless Base Defense.

    Nazi Zombies is a cooperative survival game where players fend off escalating waves of Nazi zombies, earning points by killing zombies and repairing barriers to buy weapons, upgrades, perks, and unlock new map areas to maximize their survival.

    2026ActionIndieFree To PlayFreeFree to playSimilar games →
  8. 8
    Minion Masters — Steam game cover

    Minion Masters

    Free-to-play alternative to Expand & Exterminate: Terrytorial Disputes - Endless Base Defense — no purchase or trial window. Shares Strategy and Indie with Expand & Exterminate: Terrytorial Disputes - Endless Base Defense.

    An addictive fast-paced hybrid of Card games & Tower-Defense. Play 1v1 - or bring a friend for 2v2 - and engage in epic online multiplayer battles full of innovative strategy and awesome plays! Collect 200+ cards with unique mechanics, all free!

    2019ActionStrategyIndieFreeFree to playSimilar games →