He had fixed the sync error. For six months, the Viet Hoa version would desync from the global servers during PvP, turning a duel into a phantom argument where one player saw a Blue-Eyes attacking and the other saw an empty field. Now, he had rewritten the packet sniffer. It was perfect.

Released originally in 2014, served as the definitive classic digital card game experience on Android and iOS before the faster-paced Duel Links took over.

Tonight, he was uploading version 3.4. The final patch.