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Games like Underworld Idle

Underworld Idle leans idle, never really ends. These games share the most with it, and each one says why.

Only
  1. Mushies! cover art

    Mushies!FeaturedComing soon

    Also prestige

    Click the big mushroom, hire worker shrooms, build houses and dig underground in a cozy pixel-art mushroom village. Over 85 upgrades and a Wisdom prestige loop.

  2. Incremental Adventures cover art

    Incremental Adventures

    Also prestige, pure numbers · Same active/idle balance (leans idle)

    Heroes fight on their own in automated turn-based combat while you tune the automation and push toward double-exponent numbers through stacked prestiges.

    78% steam
    70% idle
  3. Revolution Idle cover art

    Revolution Idle

    Also pure numbers, prestige · Same active/idle balance (leans idle)

    Wheels inside wheels. A clean, abstract prestige stack with a lot of layers and very little fluff.

    87% steam
    60% idle
  4. Idle Wizard cover art

    Idle Wizard

    Also magic, prestige · Same active/idle balance (leans idle)

    Choose a wizard class, stack spells, transcend. A class-based prestige game with lots of build variety.

    86% steam
    60% idle
  5. Realm Grinder cover art

    Realm Grinder

    Also prestige, factions

    Pick a faction, build a kingdom, abdicate, reincarnate, ascend. Every run changes which of eleven factions is optimal.

    87% steam
    55% idle
  6. Synergism cover art

    SynergismUpdated

    Also pure numbers, prestige · Same active/idle balance (leans idle)

    Five prestige layers stacked like a tower, each one reshaping the ones below. For people who liked AD and want more.

    75% steam
    60% idle
  7. Incremental Mass Rewritten cover art

    Incremental Mass RewrittenDormant

    Also pure numbers, prestige · Same active/idle balance (leans idle)

    Gain mass, become a black hole, then an atom, then a supernova. The numbers get absurd quickly and never stop.

    4.4★ galaxy
    60% idle
  8. Exponential Idle cover art

    Exponential Idle

    Also pure numbers, prestige · Same active/idle balance (leans idle)

    A math idler where the upgrades are literally terms in an equation. Graduate, then play the custom theories.

    75% idle

  9. Swarm SimulatorDormant

    Also pure numbers, prestige · Same active/idle balance (mostly idle)

    Grow an alien hive: larvae, drones, queens, nests, and then the numbers start producing numbers.

    80% idle
  10. Cookie Clicker cover art

    Cookie Clicker

    Also prestige · Same active/idle balance (leans idle)

    The grandma of the genre, literally. Click a cookie, buy grandmas, ascend, and discover the game is much stranger than it looks.

    96% steam
    70% idle
  11. The Magician's Research cover art

    The Magician's Research

    Also magic, prestige, factions

    Pick one of ten mages to hunt escaped experiments, with a skill tree, alchemy, faction reputation and two prestige currencies. Offline gains last up to a week.

    58% steam
  12. Fundamental cover art

    Fundamental

    Also prestige, pure numbers · Same active/idle balance (leans idle)

    Start with a single particle and build up the universe. Galaxy's most-played game by total hours, by a lot.

    4.4★ galaxy
    65% idle
  13. Antimatter Dimensions cover art

    Antimatter DimensionsUpdated

    Also pure numbers, prestige

    Buy dimensions that buy dimensions, then break infinity, then break reality. The reference point every numbers-go-up game is measured against, and it has a real ending.

    92% steam
    4.6★ galaxy
    200–600h ending
    55% idle
  14. Cell to Singularity cover art

    Cell to Singularity

    Also prestige · Same active/idle balance (leans idle)

    Evolve life from a single cell to a technological singularity, with a surprising amount of real science in the tooltips.

    89% steam
    70% idle
  15. Magic Research 2 cover art

    Magic Research 2

    Also magic, prestige

    The sequel adds exploration, a spell-crafting system and a much longer story arc.

    93% steam
    50–120h ending
    55% idle
  16. Magic Research cover art

    Magic Research

    Also magic, prestige

    Research spells, attune to elements, retire and start over stronger. A focused, loop-based wizard sim.

    91% steam
    30–60h ending
    55% idle
  17. NGU Idle cover art

    NGU Idle

    Also prestige · Same active/idle balance (leans idle)

    Joke-dense RPG idler with dozens of interlocking systems. Beating a boss is the easy part; allocating energy is the game.

    96% steam
    65% idle
  18. DodecaDragons cover art

    DodecaDragons

    Also prestige, pure numbers

    Twelve dragons, twelve colours of magic, and one of Galaxy's most-favourited games. Big numbers, handsome UI.

    4.6★ galaxy
    has ending
    55% idle
  19. Idling to Rule the Gods cover art

    Idling to Rule the Gods

    Also prestige · Same active/idle balance (leans idle)

    Train clones, fight gods, rebirth. An old-school Unity idler that still has a loyal crowd.

    85% steam
    75% idle
  20. Orb of Creation cover art

    Orb of Creation

    Also magic, prestige

    Grow a wizard's orb into a world. Spell circles, resource webs, and a real finale.

    84% steam
    20–40h ending
    50% idle
  21. Bloobs Adventure Idle cover art

    Bloobs Adventure Idle

    Also prestige · Same active/idle balance (leans idle)

    A RuneScape-style idle RPG with 24 linked skills, automated boss fights, soul collecting and skill prestige, plus banked offline time to spend later.

    88% steam
    75% idle
  22. Distance Incremental cover art

    Distance Incremental

    Also pure numbers, prestige

    Go faster, go further. Rockets, time reversal and a very long list of layers from the Prestige Tree author.

    4.4★ galaxy
    55% idle
  23. Idle Research cover art

    Idle Research

    Also prestige, pure numbers

    Research and craft flasks and tubes to generate three kinds of energy, with several prestige types, fights, skills and potion brewing.

    85% steam
    50% idle
  24. Clicker Heroes cover art

    Clicker Heroes

    Also prestige · Same active/idle balance (leans idle)

    Click monsters, hire heroes, ascend, transcend. The game that made idle RPGs mainstream on Steam.

    90% steam
    60% idle