Recipes

Copy-paste starting points for common idle-game patterns. Each recipe is a complete, self-contained example using only public imports — take one, rename the resources, and build from there.

Basics

• Simple clicker — state, a click action, DOM bindings, start. The smallest complete game.
• Idle production — passive income with the producers mechanic: cost curves, bulk buy, progress display.
• @idlekitjs/economy — resource declarations, upgrade previews, transactions, formatting and cost curve recipes.

Shipping essentials

• Save & load in the browser — versioned saves, autosave, reset button.
• Offline progress — page lifecycle + offline catch-up + a "welcome back" summary.

Advanced mechanics

• Crafting machine — recipes, a machine, a progress bar, and an auto-restart policy.
• Temporary boost — grant, countdown UI, expiry.
• Boosted production — boosts feeding the modifier registry feeding producers.

Engineering

• Headless testing — deterministic simulation tests with advance and manualScheduler, no DOM.

The games are recipes too

The repository's games/ folder contains complete games built on these same APIs — when a recipe feels too small, read how a real game wires the same pieces.