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Formation Builder Idle PlaytestNewsUpdate 0.1.5 Grand Tailor World Mastery System
Game update

Update 0.1.5 Grand Tailor World Mastery System

Formation Builder Idle Playtest · published 2 Apr 2026, 21:17 UTC · build 22626874

All newsPlayers around this dateRead on Steam

Current Version: v0.1.5 Requires new download

World Mastery System (Major Feature)

  • Grand Tailor Mastery - A new endgame progression system tied to World Essence!
    • Each world (except World 6) has 5 mastery tiers to unlock by earning WE
    • Each tier requires earning 2,000 WE and grants 2 Mastery Points (10 MP per world, 160 MP total across 16 worlds)
    • Crown System - Complete all 5 tiers in a world group to earn crowns:
      • Bronze Crown: Worlds 1-5 → +3% WE earning bonus + 10 OWE
      • Silver Crown: Worlds 7-11 → +6% WE earning bonus + 10 OWE
      • Gold Crown: Worlds 12-16 → +9% WE earning bonus + 10 OWE

    • Mastery badges shown on the World Picker for at-a-glance progress

Mastery Point Upgrades

  • Spend your earned Mastery Points on permanent upgrades:
    • Essence Attunement - +1% WE earning per purchase (unlimited)
    • Tailor's Bargain - 10% discount on Tailor's Chest purchases per level (max 3, up to 30% off)
    • Warp Efficiency - 50% discount on Prestige Warp diamond cost (max 1)
    • Essence Harmonics - Reduce transmutation tax by 10% (70%→60%) (50 MP)
    • Essence Mastery - Reduce transmutation tax by another 10% (60%→50%) (80 MP)

Tailor's Chest

  • New chest type purchasable with World Essence (5,000 WE base cost, discountable via Tailor's Bargain)
  • Contains: Celestial Gear (100%), Celestial Gear (90%), Super Celestial Gear (50%), Super Celestial Gear (10%), plus scaled Gear Essence and Animal Food
  • Gear Essence and Animal Food drops scale with your highest gear rarity

World Essence Transmutation

  • Convert World Essence from one world to another
  • Requires Tier 3+ mastery in the target world
  • Base tax rate of 70% (heavy incentive to farm directly), reducible to 50% via MP upgrades
  • Transmutation log tracked for economy monitoring

Resonance Chain

  • Earn bonus WE by prestiging across different worlds!
  • Each consecutive unique prestige world in your last 3 runs adds +10% WE (max +30%)
  • Running the same world twice in a row breaks the chain
  • Chain history displayed on the World Picker

World Spotlight

  • 3 worlds are spotlit each day (rotates daily, MT-based)
  • Spotlit worlds grant +30% bonus WE on prestige
  • World 6 excluded from spotlight rotation
  • Spotlight info shown on the World Picker sidebar

Grand Tailor Tutorial

  • 7-step guided tutorial that triggers when you first open the Mastery tab
  • Walks you through the WE earning formula, mastery tiers, crowns, transmutation, and the Tailor's Chest

World Essence Inventory Tab

  • New dedicated tab in the inventory screen showing all your World Essence balances
  • World number tooltips for quick identification

Mission Roster Improvements

  • Added roster filtering on the mission select screen
  • Heroes auto-sort by contribution to the selected mission

Idle Pets Warning Banner

  • New warning banner when pets are sitting idle (not assigned to heroes, or farming)

Performance Improvements

  • Merged wave rewards into save_user_state - Eliminated a separate API call every 3 seconds. Wave rewards are now processed inline during the 30-second save heartbeat
  • Increased save interval to 30 seconds (from 10s) - Reduces server load significantly

Bug Fixes

  • Strixia - Now correctly grants buff per female hero in column, not just the first one
  • WE gain formula - Now properly accounts for enemy compression in World Essence calculations
  • Max wave display - Stores level compression with max wave to fix display after speed mine upgrades
  • Mine detail UI - Time and yield labels now update correctly after adding miners
  • Miner slot count - Recalculated on UI rebuild to stay accurate
  • Offline rewards crash - Added guards for missing gold_gained and waves_cleared keys
  • Mission hero selection - Fixed race condition on high-latency connections
  • Mission selection state - Properly cleared on close and before refresh
  • Window management - Dynamic CanvasLayer z-order; Escape key closes most recently opened window (LIFO stack)
  • Mount combat tooltips - Standardized reward tooltip formatting
  • Removed all emoji from player-facing UI for cross-platform compatibility
  • Stable chest open-all cap - Increased from 1,000 to 1,000,000
  • Talent descriptions - Standardized wording across all talents for consistency
  • Steam login - Hidden login form for Steam users, showing centered status text instead
  • Mine state query - Explicitly selects item_id and inventory_item_type_id to prevent ambiguous column issues
More from Formation Builder Idle Playtest

Other announcements

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Game update15 Sep 2026v0.6.2: Smoother Runs, Clearer MasteryNew Features · Critter Corner now shows your selected mount's element beside its name. · Hover over your current wave or DPS estimate to see the equivalent wave without compression. Bug Fixes · Fixed Auto Farm activation after editing your formation while Auto Farm was disabled. · Closing the World Picker overlay no longer pauses Auto Farm. · Cancelling an Auto Farm prestige before it starts no…Game update13 Sep 2026v0.6.1: Auto Farm RecoveryBug Fixes · Fixed Auto Farm getting stuck while waiting for a valid run or saved formation, including after reconnecting. · Auto Farm now recovers when you save or reload a matching formation, without interrupting the loop for an unchanged team. · Added recovery for stalled Auto Farm transitions. If a prestige or run start cannot be confirmed, the game reloads server state instead of continuing…Game update12 Sep 2026v0.6.0: Beyond the LimitNew Features · Heroes can now level beyond their normal-price limit at increasingly higher gold costs. Hero-level talents and Beast Bond raise the point where these extra costs begin. · Auto Farm now has a mastery mode that follows today's Spotlight worlds using your saved formations. It skips worlds and formations that cannot be used and pauses if none are available. · You can preview Auto Far…