IMHO.

Single-player games like Supernova Idle

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

Ranked picks

  1. 1
    PlinkIdle — Steam game cover

    PlinkIdle

    Single-player alternative to Supernova Idle — playable solo, no multiplayer required. Shares Casual with Supernova Idle.

    PlinkIdle is a retro-inspired game with an idle/incremental spin on a classic ball drop mechanic. Falling balls, rare buffs, and steady upgrades unlock colorful, cozy stages and immersive environments.

    2026StrategyIndieCasualSingle-playerSimilar games →
  2. 2
    Orbosis Gloriosis — Steam game cover

    Orbosis Gloriosis

    Single-player alternative to Supernova Idle — playable solo, no multiplayer required. Shares Casual with Supernova Idle.

    A physics-based incremental game where you split and merge orbs

    2026ActionIndieSimulation4.99 USDSingle-playerSimilar games →
  3. 3
    Cosmic Clicker — Steam game cover

    Cosmic Clicker

    Single-player alternative to Supernova Idle — playable solo, no multiplayer required. Shares Casual with Supernova Idle.

    Build a cosmic energy empire in this colorful incremental sci-fi game. Click, automate production, unlock technologies, explore distant planets, collect artifacts, raise cosmic pets, and ascend to unlock permanent upgrades.

    IndieSimulationCasualSingle-playerSimilar games →
  4. 4
    Ring cosmos — Steam game cover

    Ring cosmos

    Single-player alternative to Supernova Idle — playable solo, no multiplayer required. Shares Casual with Supernova Idle.

    A cosmic idle game where comets shatter neon rings. Prestige into Cores, build a 269-star constellation with a Star Limit that forces real choices, then dive into timed Rifts and 4-floor Vaults for endgame loot. No forced ads, fair monetization, made by a solo dev.

    2026IndieFree To PlayCasualFreeSingle-playerSimilar games →
  5. 5
    CQ: Calling Any Station — Steam game cover

    CQ: Calling Any Station

    Single-player alternative to Supernova Idle — playable solo, no multiplayer required. Shares Casual with Supernova Idle.

    An idle/incremental game about a lone radio operator keying into a silent universe. Click or walk away, both work just as well. Build your station, log distant contacts, retune to grow stronger, and slowly decode what answers back.

    2026IndieSimulationCasual5.09 USDSingle-playerSimilar games →
  6. 6
    Planet No More — Steam game cover

    Planet No More

    Single-player alternative to Supernova Idle — playable solo, no multiplayer required. Shares Casual with Supernova Idle.

    An arcade-incremental game where you DESTROY planets! Build a fleet, upgrade weapons, max out your skill tree and destroy your target slowly. You'll advance deep into the galaxy, strategically shattering planets to their cores to unlock the next celestial.

    2026StrategySimulationCasualSingle-playerSimilar games →
  7. 7
    Rock Flipper — Steam game cover

    Rock Flipper

    Single-player alternative to Supernova Idle — playable solo, no multiplayer required. Shares Casual with Supernova Idle.

    Rock Flipper is a short incremental idler about throwing rocks to mine and earn cash, completing a huge skill tree, awakening monoliths, feeding the Rift, and becoming enlightened with the truth about the universe.

    ActionIndieSimulationSingle-playerSimilar games →
  8. 8
    Gemtide — Steam game cover

    Gemtide

    Single-player alternative to Supernova Idle — playable solo, no multiplayer required. Shares Casual with Supernova Idle.

    Explore the depths of the sea while collecting gems for adorable critters on your way down in this cozy incremental adventure.

    2026IndieAdventureCasualSingle-playerSimilar games →