IMHO.

Single-player games like Planet Stronghold: Colonial Defense

Below are 16 single-player Steam games similar to Planet Stronghold: Colonial Defense, 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 Planet Stronghold: Colonial Defense page.

Ranked picks

  1. 1
    Heirs And Graces — Steam game cover

    Heirs And Graces

    Single-player alternative to Planet Stronghold: Colonial Defense — playable solo, no multiplayer required. Shares Indie with Planet Stronghold: Colonial Defense.

    Play as Marcel and determine whether or not he has the skills to become Lord Sandor's heir and whether or not he forms a romantic attachment to one of four potential love interests: an ex-gladiator turned gardener, a perfectionist butler, the local doctor, or a mischievous elven Lord.

    2016IndieAdventureCasual19.99 USDSingle-playerSimilar games →
  2. 2
    Monster Monpiece — Steam game cover

    Monster Monpiece

    Single-player alternative to Planet Stronghold: Colonial Defense — playable solo, no multiplayer required. Shares Strategy with Planet Stronghold: Colonial Defense.

    Collect and train over 100 "monster girls" that come to life in strategic, card-based battles! Strengthen your cards with the First Crush ❤ Rub mode, taking on a hands-on role to warm them up and gain more artwork!

    2017Strategy9.99 USDSingle-playerSimilar games →
  3. 3
    Battle Suit Aces — Steam game cover

    Battle Suit Aces

    Single-player alternative to Planet Stronghold: Colonial Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Planet Stronghold: Colonial Defense.

    Battle Suit Aces is a Saturday morning cartoon where you're at the helm! Grow your roster of charming mech pilots as you immerse yourself in thrilling story missions and charge into card combat. Suit Up!

    2025StrategyIndieRPG24.99 USDDeck VerifiedSingle-playerSimilar games →
  4. 4
    I Was a Teenage Exocolonist — Steam game cover

    I Was a Teenage Exocolonist

    Single-player alternative to Planet Stronghold: Colonial Defense — playable solo, no multiplayer required. Shares Indie with Planet Stronghold: Colonial Defense.

    Spend your teenage years on an alien planet in this narrative RPG with card-based battles. Explore, grow up, and fall in love. The choices you make and skills you master over ten years will determine the course of your life and the survival of your colony.

    2022IndieSimulationRPG12.49 USDDeck VerifiedSingle-playerSimilar games →
  5. 5
    Kamifuda — Steam game cover

    Kamifuda

    Single-player alternative to Planet Stronghold: Colonial Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Planet Stronghold: Colonial Defense.

    Master the eldritch art of Kamifuda—channeling long dead powers within arcane cards—in this visual novel and deck builder game.

    2022StrategyIndie10.99 USDSingle-playerSimilar games →
  6. 6
    Winds of Change — Steam game cover

    Winds of Change

    Single-player alternative to Planet Stronghold: Colonial Defense — playable solo, no multiplayer required. Shares Indie with Planet Stronghold: Colonial Defense.

    Lead The Rebellion, build your army, and shape the world with your choices. A story-heavy adventure game with multiple endings, romance options, and non-linear storytelling. A vast fantasy world waiting to be explored. Inspired by Dragon Age, and Mass Effect. Fully voice acted by a stellar cast!

    2019IndieAdventureRPG19.99 USDSingle-playerSimilar games →
  7. 7
    Planet Stronghold 2 — Steam game cover

    Planet Stronghold 2

    Single-player alternative to Planet Stronghold: Colonial Defense — playable solo, no multiplayer required. Shares Indie with Planet Stronghold: Colonial Defense.

    Planet Stronghold 2 is the sequel to the first sci-fi VN/RPG made by Winter Wolves. Isometric map exploration, crafting, combat, a branching plot and of course romances awaits you in this new adventure!

    2020IndieRPG24.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Griftlands — Steam game cover

    Griftlands

    Single-player alternative to Planet Stronghold: Colonial Defense — playable solo, no multiplayer required. Shares Indie with Planet Stronghold: Colonial Defense.

    Griftlands is a deck-building roguelite where you negotiate, fight, steal or otherwise persuade others to get your way. Every decision is important, be it the jobs you take, the friends you make, or the cards you collect.

    2021Indie6.79 USDDeck VerifiedSingle-playerSimilar games →
  9. 9
    Planet Stronghold — Steam game cover

    Planet Stronghold

    Single-player alternative to Planet Stronghold: Colonial Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Planet Stronghold: Colonial Defense.

    Planet Stronghold is a sci-fi role-playing game with a turn-based combat system. You take the role of a young, new recruit that somehow gets assigned to the most well-known, and well-defended, human outpost in the whole galaxy: Planet Stronghold.

    2014StrategyIndieRPG18.99 USDDeck PlayableSingle-playerSimilar games →
  10. 10
    Loren The Amazon Princess — Steam game cover

    Loren The Amazon Princess

    Single-player alternative to Planet Stronghold: Colonial Defense — playable solo, no multiplayer required. Shares Indie with Planet Stronghold: Colonial Defense.

    Loren The Amazon Princess is a fantasy epic combining intricate turn-based battles with a heroic tale of overcoming evil - with a twist! In this tale, you play as a loyal servant of the hero rather than the hero herself.

    2014IndieRPG19.99 USDDeck PlayableSingle-playerSimilar games →
  11. 11
    Always Remember Me — Steam game cover

    Always Remember Me

    Single-player alternative to Planet Stronghold: Colonial Defense — playable solo, no multiplayer required. Shares Indie with Planet Stronghold: Colonial Defense.

    Amy is desperate! Her boyfriend Aaron doesn't remember her anymore after a car accident! Will you be able to make him remember again? Or perhaps it's time to move on. Maybe Amy will fall in love with someone else? It's up to you to decide. Play this life simulation game with dating sim elements and shape Amy's destiny.

    2014IndieSimulationCasual17.99 USDDeck PlayableSingle-playerSimilar games →
  12. 12
    Cursed Lands — Steam game cover

    Cursed Lands

    Single-player alternative to Planet Stronghold: Colonial Defense — playable solo, no multiplayer required.

    Defeat the evil lurking in Castle Of N'Mar in this RPG/dating sim game. Recruit your team in any order you want, use the optional social talents to win the battles, play as male or female and fully customize your avatar. Five romance per gender, including the unique Naga Enok and Sylrissa!

    2018RPG24.99 USDDeck PlayableSingle-playerSimilar games →
  13. 13
    Roommates — Steam game cover

    Roommates

    Single-player alternative to Planet Stronghold: Colonial Defense — playable solo, no multiplayer required. Shares Indie with Planet Stronghold: Colonial Defense.

    Join Max or Anne in Latin House for their first college year! They'll juggle classes, jobs, and social life with four dorm mates, potentially sparking some extracurricular fun. As Anne you can romance Max, Isabella, Dominic and Rakesh. As Max, romance Anne, Isabella, Sally and Rakesh.

    2014IndieAdventureSimulation24.99 USDDeck PlayableSingle-playerSimilar games →
  14. 14
    Flower Shop: Summer In Fairbrook — Steam game cover

    Flower Shop: Summer In Fairbrook

    Single-player alternative to Planet Stronghold: Colonial Defense — playable solo, no multiplayer required. Shares Indie with Planet Stronghold: Colonial Defense.

    The Flower Shop: a dating and farming sim game. Steve's life is in shambles: bad grades, rocky relationship, and forced to work on a farm for the summer. Join him in Fairbook as he navigates farm life, makes new friends, and maintains old relationships.

    2014IndieSimulationCasual9.99 USDSingle-playerSimilar games →
  15. 15
    Spirited Heart Deluxe — Steam game cover

    Spirited Heart Deluxe

    Single-player alternative to Planet Stronghold: Colonial Defense — playable solo, no multiplayer required. Shares Indie with Planet Stronghold: Colonial Defense.

    Spirited Heart is a fantasy life simulation game. Create your fantasy alter ego choosing between an apparently normal human, a cute elf and a wicked demoness. Run your life in a virtual fantasy world: choose a job from the 20 different ones available, raise your stats, and maybe even find romance!

    2014IndieSimulationRPG19.99 USDSingle-playerSimilar games →
  16. 16
    Heileen 1: Sail Away — Steam game cover

    Heileen 1: Sail Away

    Single-player alternative to Planet Stronghold: Colonial Defense — playable solo, no multiplayer required. Shares Indie with Planet Stronghold: Colonial Defense.

    Embark with Heileen in a unforgettable voyage to the New World! Met with old friends, and make new ones. Find romance, avoid dangers and life your life to the fullest!

    2014IndieAdventureCasual5.99 USDSingle-playerSimilar games →