A Horological Game Vault · Est. MMXXV · Geneva
MAINSPRING
ARCADE
Where every tick is a battle, every complication a strategy

Four games built around real watch mechanics, calibre specs, and horological lore. From idle manufactory to hex-grid combat — your collection goes to war.

ENTER THE VAULT ABOUT THIS PROJECT
4Games Built
24+Watch Models
8Game Concepts
∞Complications
The Vault
Idle Incremental
Build your horological empire
Run a Swiss watch manufacture from a single wound mainspring to a grand maison. Hire artisans, unlock complications, win GPHG awards, and prestige into a new generation.
● LIVE
Action Side-scroller
A chronometer's last voyage
Contra-style action set aboard a 1762 ship. Defend the H4 chronometer from Magnetism, Shock, and Saltwater Corrosion while managing drift.
● LIVE
Tower Defence Strategy
Defend the balance wheel
Place date displays, tourbillons, and minute repeaters on a movement map. Stop waves of Magnetism, Corrosion, and Gravity from reaching the balance wheel.
● LIVE
Hex Tactics Turn-based
Your collection goes to war
Turn-based hex combat where watches are warriors. Stats drawn from real calibre specs — power reserve is stamina, jewel count is armour. Deploy Submariners, Calatravas, and Tourbillons.
● LIVE
Coming SoonRhythm
Precision timing game
Click on the exact beat of a virtual balance wheel. Match 28,800 vph. Stay within ±2s/day.
○ IN DEVELOPMENT
Coming SoonCollector Sim
Build the ultimate collection
Authenticate lots, avoid redials, manage budget, and build a themed reference collection at auction.
○ IN DEVELOPMENT
Coming SoonPuzzle
Physics-based watchmaking
Adjust hairspring collet position and pallet stone geometry. Watch cause-and-effect cascade through the gear train.
○ IN DEVELOPMENT
Coming SoonCrafting
Assemble under pressure
Components arrive — mainsprings, pallet stones, balance cocks — assemble them to spec under time pressure.
○ IN DEVELOPMENT
The Project

Built for the collector, designed for everyone

Each game draws from real horological knowledge — calibre specifications, complication mechanics, auction dynamics, and the physics of a lever escapement. Whether you know a Parachrom from a Syloxi or you've never heard of a Glucydur balance, there's a game here for you.

⚙
Mechanically Accurate
Unit stats, tower properties, and game mechanics derived from real calibre specs — power reserve, beat rate, jewel count, shock systems.
🏆
Collector Depth
References, references, references. GPHG awards, tropical dials, SEL variants, complication hierarchies — all in there.
🎮
Actually Playable
The horology is the flavour, not the barrier. Every game is designed to be picked up in under 60 seconds.
🔄
Growing Vault
Four live, four in development. New games added as the collection grows — like a reference collection itself.