Prove the infinite monkey theorem with an army of endlessly typing monkeys in “Idle Monkey Theorem,” out September 24

The release date has finally been announced for the idle game in which monkeys complete Shakespeare's works through random typing.

PC Windows
Prove the theory that “if a monkey types on a typewriter indefinitely, it will eventually produce a work by Shakespeare.” “The Idle Monkey Theorem,” which features an army of monkeys typing endlessly, is set for release on September 24.
Prove the theory that “if a monkey types on a typewriter indefinitely, it will eventually produce a work by Shakespeare.” “The Idle Monkey Theorem,” which features an army of monkeys typing endlessly, is set for release on September 24.
  • Prove the theory that “if a monkey types on a typewriter indefinitely, it will eventually produce a work by Shakespeare.” “The Idle Monkey Theorem,” which features an army of monkeys typing endlessly, is set for release on September 24.
  • Prove the theory that “if a monkey types on a typewriter indefinitely, it will eventually produce the works of Shakespeare.” “The Idle Monkey Theorem,” which features an army of monkeys typing endlessly, is set for release on September 24.
  • Prove the theory that “if a monkey types on a typewriter indefinitely, it will eventually produce a work by Shakespeare.” *The Idle Monkey Theorem*, which features an army of monkeys typing endlessly, is set for release on September 24.
  • Prove the theory that “if a monkey types on a typewriter indefinitely, it will eventually produce a work by Shakespeare.” “The Idle Monkey Theorem,” featuring an army of monkeys typing endlessly, is set for release on September 24.

Independent developer Ozymandias has announced that “Idle Monkey Theorem,” an incremental game currently in development, will be released on PC (Steam) on September 24 (Japan Time).

A monkey, a typewriter, and a quill pen

This incremental game is based on the “Infinite Monkey Theorem”—a thought experiment in which a monkey randomly types on a typewriter to see if it can accidentally produce works such as those by Shakespeare.After releasing a demo at the 2026 Steam Next Festival, the developer has been refining the gameplay experience and adjusting the progression balance, and the game is finally set to be unveiled.

In the game, you can unlock and upgrade up to 50 typing monkeys, keeping them at work on their typewriters. The objective is to collect words—using a quill pen—as soon as you see on screen that one of the monkeys has typed a word used in a Shakespearean work, thereby completing the actual text.

Depending on how well the monkeys work, you’ll earn Inspiration Points. You can use these to strengthen your monkey army by increasing the number of monkeys, improving their word-generation abilities, or expanding the range of the quill pen’s collection.

Key Features

  • Form
    a Monkey Army Start with a single monkey and grow it into a full-fledged typing army. Watch
    the adorable sprite animations as
    they frantically pound away at their typewriters. Each monkey generates words independently. That means: more monkeys = more words = faster progress!

  • Recreate Shakespeare’s Works Progress
    through authentic Shakespearean texts—
    plays, sonnets, and poems. Watch as your monkeys randomly type the exact words you need—even when
    luck isn’t on your side despite astronomical odds, you’ll always make progress

  • Collect & Upgrade
    : Gather Inspiration Points from your monkeys’ work and invest in powerful upgrades. Buy
    Monkeys — Increase the number of typing monkeys to boost word generation.
    Typewriter — Improve
    word generation and display speed. Intensive Training — Enables
    your monkeys to type faster. Quill Pen — Expands your collection range and makes retrieval easier
    . Library — Increases
    the value of all collected words. Lucky Ink — Increases the probability of the words you need appearing.


"Idle Monkey Theorem" is scheduled for release on PC (Steam) on September 24.


無限の猿の定理 タイプライターの猿 算数オタク パーカー
¥4,400
(価格・在庫状況は記事公開時点のものです)
ハムレット(新潮文庫)
¥636
(価格・在庫状況は記事公開時点のものです)
By KADEN