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- World 2 (Filtros): 8 levels teaching filters, resonance, LFO modulation, acid bass - World 3 (Envelopes): 8 levels teaching VCA, ADSR, pluck, tremolo, full synth lead - Star-based world unlock system (12 stars for W2, 24 for W3) - Level patch persistence: auto-saves player patches, restores on revisit - Google Maps-style zoom controls (+/−/reset) in both puzzle and sandbox views - Multi-world navigation in GameApp and WorldMap - Target audio now supports filter chain for World 2 levels Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>