Arcanum Idle

Arcanum Idle is developed by Lanier Labs LLC and published by Lanier Labs LLC, released on Oct 10, 2026.

A study, a circle of chalk, and eight Sigils that make each other. A deep incremental about tearing down what you built: six nested prestige layers, a Constellation you arrange by hand, time magic paid for in resets, and a story with an ending.

Basic Information

Store page feature tags: Single-player, Steam Achievements, Full controller support, Adjustable Text Size, Color Alternatives, #category_contrast_controls, Custom Volume Controls, #category_playable_at_your_own_pace, Playable without Timed Input, DualShock Controller Support, DualShock Controller Support, DualSense Controller Support, DualSense Controller Support, Save Anytime, Steam Cloud, Family Sharing.

Official Introduction Key Points

1. The house came with the study, and the study came with the circle.
2. Your predecessor left no letter. There is a circle chalked on the floorboards that has not smudged in years, a stub of chalk on the desk, and a candle that has not gone out. Put a hand inside the line and the circle gives you mana.
3. Buy it once. No ads, no energy, no premium currency, no account. It runs fully offline.
4. AN ENGINE THAT BUILDS ITSELF
5. Eight tiers of Sigil, each producing the tier below it. Buy an Ember and it makes mana. Buy a Rune Stone and it makes Embers. By the Sanctum you are eight rungs up a ladder that runs itself, and the numbers are past anything with a name.
6. SIX LAYERS DEEP
7. Resonance redraws your circle wider. Transcription writes the whole Study onto a page as Insight. Ascension leaves the pages behind for Attunement and the Elements. Convergence takes you above the house to arrange a sky. Chronomancy is paid for in the number of times you have torn it all down, and the Choir is four other houses finally answering, with too few Voices to go round.
8. All six are in the game today, and the story has an ending. In playtesting the sixth layer opens 55 to 75 hours after you start, counting time with the game closed.

Minimum System Requirements (Windows)

- OS: Windows 10 (64-bit)
- Processor: Any x64 processor, 2 GH
- Memory: 2 GB RAM
- Graphics: Any GPU with WebView2 support
- DirectX: Version 11
- Storage: 200 MB available space

Achievement Highlights

• First Light
• The Cascade
• Tempo
• Resonant
• Eightfold
• Full Shelves
• Hands On
• Transcribed

Official Screenshots

This page’s gallery section collects all 8 official screenshots of Arcanum Idle.

The content above is from publicly available data on the Steam store page. In case of any discrepancies with the store page, the store page shall prevail.