Arcanum Idle CD Key
PC price comparison · Lanier Labs LLC · 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.
Lowest final price
at Steam · Standard Official
Historical low: $9.99 on October 11, 2026
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Arcanum Idle price history
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Historical lows by store
- Steam$9.99
About Arcanum Idle
The house came with the study, and the study came with the circle. 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. Buy it once. No ads, no energy, no premium currency, no account. It runs fully offline. AN ENGINE THAT BUILDS ITSELF 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. SIX LAYERS DEEP 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. 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. A PLAYSTYLE, NOT A DIFFICULTY Choose a Doctrine after each Ascension. The Quickened builds Momentum by hand and is strongest while you play. The Patient grows stronger the longer a run is left alone. The Threefold Path takes half of each. ARRANGE, DON'T JUST BUY The Constellation is a five-by-five board. Stars are worth what their neighbours make them worth, and a Bridge is worth nothing alone, only for the Stars it touches. TRIALS Seven runs of the Study with a rule broken: no tempo, only two Sigils, no ladder at all so every tier has to pay for itself. Each one you finish leaves a permanent reward. RELICS Each Ascension offers three relics and you keep one. There are ten, and two come only to the right Doctrine. A stub of chalk. A bell with no clapper. An hourglass that was already broken. Each one changes a rule of the Study for good. MADE TO BE LEFT RUNNING The circle keeps working at reduced strength while the game is closed, for up to a week, and the Transcriptions auto-Transcribe would have made still count toward Chronomancy and the Choir. Autobuyers switch themselves on as you unlock them, and automated resets stay quiet. Steam Cloud saves, with local backups you can restore. Keyboard shortcuts, text size, colour-blind palettes and…Read more
Arcanum Idle system requirements
Minimum
- 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
Arcanum Idle key FAQ
+What is a Arcanum Idle CD key?
A Arcanum Idle CD key is a digital code that unlocks the game on a PC platform such as Steam. After redeeming it, you download the game directly from that platform and it stays in your library.
+What is the cheapest price for Arcanum Idle?
The cheapest Arcanum Idle key right now costs $9.99 at Steam. We compare 1 offers from 1 store, and the price already includes payment and service fees.
+What is the historical low for Arcanum Idle?
The lowest price we have recorded for Arcanum Idle is $9.99 on October 11, 2026. Check the price history chart to decide whether to buy now or wait for the next sale.
+Is it safe to buy a Arcanum Idle key?
Buying from an official store such as Steam, GOG or Epic Games is always safe. Key resellers are often cheaper but sell keys second-hand, so check the region lock and buyer protection before you buy. Every offer on GameKeyDeal is labelled as official or reseller.
