The Endless Grimoire — cozy spell-craft idle with polished systems

Overview

The Endless Grimoire is a cozy, session-friendly idle/incremental with a spellbook at its heart. You gather arcana, hire workers to automate taps, unlock passive sigils that reshape the math, and time active spells with cooldowns to break through soft caps.

Active & passive magic: actives have costs/cooldowns; passives unlock permanent modifiers and new builds.
Workers & automation: Producers, Speeders, and Boosters with readable value curves and batch-purchase helpers.
Rotating themes: 20+ themes planned for launch (some purchasable). Each time you prestige—jumping the rift into the next timeline—you’ll play in a theme you haven’t seen yet.

What makes it fun

Pacing & payoffs

Short spikes from actives; long arcs from passives.
Clear near-term goals: the next worker, sigil, or spell rank.
“Aha!” moments when synergies unlock a new tier of income.

Clarity by design

Cards explain exactly what changed (icons + crisp copy).
Cooldowns, costs, and yields in human time/number formats.
Progress bars and highlight states reduce cognitive load.

Systems at a glance

Spellbook

Actives: cost magic, trigger effects, and enter cooldown.
Passives: unlock permanent multipliers and new caps.
Detail sheets: cost rows, cooldown bars, availability, and smart primary actions (“Develop”, “Cast”, “Cooling down”).

Workers

Three worker families (Producers/Speeders/Boosters) with geometric pricing.
Batch math + max-purchasable helpers; clear buy/affordance states.

Progression

Soft/hard caps via config; narrative intro variants per theme.
Theme packs (palette, flavor, icons) swap with a single line.

Engineering highlights

SSOT for math: a Derived-Stats engine aggregates all modifiers (spells, upgrades, theme) so UI reads from one source of truth.
Typed configs with Zod: game balance in JSON validated by Zod; safe merges + experiment flags for rapid iteration.
Workers domain: pure utilities for pricing, batch buys, and max-buy; framework-agnostic so logic is easy to unit test.
Offline reconciliation: snapshot, cap, and produce during downtime with predictable, human-readable math.
React context + hooks: Campaign & Theme providers isolate state; tiny, memoized selectors keep the UI snappy.

Screenshots

Phone-first UI: portrait screens are displayed in a comfortable two-column gallery on desktop and a single column on mobile.

Intro scene with Begin Calibration button and tagline 'Spells are promises. Keep yours.' — **Opening:** “A spell is a promise.” Begin Calibration to start your first run.

Narrative objective with large call-to-action and parallax harbor backdrop — **Narrative objective:** story-driven goals with big, thumb-friendly actions.

Trading view showing yields, automation, items with bonuses, and workers — **Trading:** yields & automation at the top; items and workers drive long-term efficiency.

Spellbook grid with active and passive spells — **Spellbook:** actives for bursts, passives for permanent power.

Spell detail sheet with cost rows, cooldown, availability, and context action — **Detail sheet:** costs, cooldown, and a smart primary action (Develop, Cast, or Cooling).

Ancient Antiquity theme with Chariot Rim Sets objective and bronze-tinted UI — **Ancient Antiquity:** forge *Chariot Rim Sets*; bronze palette, period flavor text.

Wild-West theme with Dustwhisper Tonic objective and frontier town backdrop — **Wild-West:** distill *Dustwhisper Tonic* before the rift closes; new art, copy, and items.

Themes rotate as you prestige. At launch we’re targeting 20+ distinct themes (with some purchasable) so each timeline jump feels fresh.

What’s next

Achievements & meta-progress “chapters”.
More passive synergies and late-game loops.
Live-ops hooks for seasonal and purchasable themes.
Web build + iOS/Android via Expo EAS.

Curious about the game?

I'm sharing private builds with studios and fellow devs. If you'd like to playtest—or dig into the systems design and math engine—reach out and I'll send a build your way.

Request a build Explore Slotomancer →

Return to top