IMHO.

Single-player games like Underwater Cities

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

Ranked picks

  1. 1
    Red Rising — Steam game cover

    Red Rising

    Single-player alternative to Underwater Cities — playable solo, no multiplayer required. Shares Strategy with Underwater Cities.

    Fight for dominance with up to 6 players in the official digital adaptation of the award-winning board game. Assemble a hand of followers, chain together powerful combos, and lead your house to victory in this clash of cards set in the dystopian world of Red Rising.

    2026StrategyCasualSingle-playerSimilar games →
  2. 2
    Rolling Realms — Steam game cover

    Rolling Realms

    Single-player alternative to Underwater Cities — playable solo, no multiplayer required. Shares Strategy with Underwater Cities.

    The official digital port of the Stonemaier Games roll-and-write

    2023Strategy9.99 USDDeck PlayableSingle-playerSimilar games →
  3. 3
    Galactic Economy — Steam game cover

    Galactic Economy

    Single-player alternative to Underwater Cities — playable solo, no multiplayer required. Shares Strategy with Underwater Cities.

    Your road to financial freedom leads to the stars. Acquire strategic sectors, manage complex loans, and mitigate systemic risks to grow your passive income. A gritty sci-fi tycoon strategy game where every decision determines your path to galactic domination.

    2026StrategyIndieSimulationSingle-playerSimilar games →
  4. 4
    XANDO: Xtreme & Over the Top — Steam game cover

    XANDO: Xtreme & Over the Top

    Single-player alternative to Underwater Cities — playable solo, no multiplayer required. Shares Strategy with Underwater Cities.

    XANDO is a turn-based strategy game that flips the game of Tic-Tac-Toe on its head. Select from 4 rule-bending ability sets in order to complete boards, reduce your opponent's HP, and become champion in this corporate-punk world. Get ready and excited because Tic-Tac-Toe has never been like this!

    2021StrategyIndie3.99 USDSingle-playerSimilar games →
  5. 5
    Wingspan — Steam game cover

    Wingspan

    Single-player alternative to Underwater Cities — playable solo, no multiplayer required. Shares Strategy with Underwater Cities.

    Wingspan is a relaxing, award-winning strategy card game about birds for 1 to 5 players. Each bird you play extends a chain of powerful combinations in one of your three habitats. Your goal is to discover and attract the best birds to your network of wildlife preserves.

    2020StrategyIndie9.99 USDDeck VerifiedSingle-playerSimilar games →
  6. 6
    Ticket to Ride® — Steam game cover

    Ticket to Ride®

    Single-player alternative to Underwater Cities — playable solo, no multiplayer required. Shares Strategy with Underwater Cities.

    Discover a fresh adaptation of the iconic, multi-award-winning board game. Play against fellow fans around the world, or take on state-of-the-art AI opponents. Build a railway empire, claim routes and dominate your competitors on the leaderboards in this fan-favourite modern classic!

    2023StrategySimulationCasual14.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Rento Fortune: Online Dice Board Game (大富翁) — Steam game cover

    Rento Fortune: Online Dice Board Game (大富翁)

    Single-player alternative to Underwater Cities — playable solo, no multiplayer required. Shares Strategy with Underwater Cities.

    Rento is multiplayer business dice game. It is board game for 2 to 8 players.Trade lands, build houses, win auctions, roll wheel of fortune, risk in Russian Roulette and have fun.Play with your friends and acquire a monopoly over the game board :)

    2017StrategyIndieMassively Multiplayer4.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    Clue/Cluedo: Classic Edition — Steam game cover

    Clue/Cluedo: Classic Edition

    Single-player alternative to Underwater Cities — playable solo, no multiplayer required. Shares Strategy with Underwater Cities.

    The official digital version of Hasbro’s classic mystery board game, Cluedo (Clue). Roll the dice and launch into a murder investigation. Whodunit? With what weapon? Where? You’ll need all your brain power to find the answers you need, as you race your friends and family to the truth!

    2018StrategyCasual16.99 USDDeck VerifiedSingle-playerSimilar games →