On 14 April 2025, the Korea Fair Trade Commission (KFTC) imposed corrective measures and a fine of KRW 36 million on Cog Co. for violating the Electronic Commerce Act by misleading consumers regarding the probability-based item "Seal Release Scroll" in the online game Grand Chase Classic. The company falsely advertised the item as obtainable through chance, while its actual acquisition relied on a point-accumulation system requiring a fixed threshold (3'840 points) to guarantee success, with a 0% success rate below this threshold. Additionally, Cog provided inaccurate probability rates (1.10%–17.16%) in February 2023, which were later retracted. The KFTC determined these actions constituted deceptive practices under Article 21(1)(1) of the Act, citing consumer harm evidenced by KRW 3 billion in sales and user complaints.
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