Parcelglow · Keys and Couriers
Parcelglow · Keys and Couriers is a cozy finite courier puzzle: move illustrated letters between trays, share and return travel keys, light a bridge, respect tray capacities and recover from stranded couriers. Six original solver-verified chapters, exact target counts, shortest-route nudges, undo/reset, keyboard/touch controls and device-local completion seals. Actual Petri-net enabling/firing core, Place/Transition/Arc classes and read/inhibitor/capacity semantics extracted from https://github.com/chimenkamp/YAPNE-Yet-Another-Petri-Net-Editor (14 observed stars, MIT, substantive browser-storage maintenance October 16, 2026; commit b35a438365d936c650ee68e158f6f92a3d6cdfba). Original game/interface/scenarios; not the complete upstream editor. Four GPT-painted mailbox, letter, lantern and key assets are local interactive resource-tray imagery. Metadata source tags: github-source, game. Static local relative HTML/CSS/JavaScript, no backend/account/external runtime assets/downloads/popups. Original adaptation code MIT; upstream notice retained.
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