The Korea Fair Trade Commission (KFTC) fined Nexon a record 11.6 billion KRW ($8.9M) for secretly altering drop rate probabilities of paid "Cubes" in MapleStory to absolute zero for top-tier rewards while falsely claiming rates were unchanged.
Case overview
Nexon operated a highly profitable monetization system in its MMORPG MapleStory based on paid consumable items called "Cubes". These items randomly reset and upgraded the statutory properties ("potential options") of in-game equipment. The KFTC investigation revealed that between 2010 and 2021, Nexon repeatedly and secretly altered the mathematical algorithms behind these drop rates without notifying the user base. In 2010, they lowered popular drop configurations to boost scarcity. Crucially, in August 2011, Nexon completely adjusted the drop rate of drawing three matching top-tier desired stats to absolute zero (0%), making it mathematically impossible to achieve the optimal combination. Despite making these structural downgrades, Nexon issued a public notice stating that probability systems were "operating normally and unchanged," continuing to actively market and sell the Cubes.
Sanctions & remedies
11.6 Billion KRW fine (~$8.9 Million USD), corrective administrative orders, and mandatory public disclosure of violations
Legal basis
South Korean Act on Consumer Protection in Electronic Commerce (Electronic Commerce Act) — Section 21 (Prohibition of Deceptive Consumer Inducement)
Compliance takeaway
This case represents a critical shift from industry self-regulation to strict statutory enforcement regarding mandatory drop rate transparency in randomized mechanics. Dynamic Rate Manipulation Prohibited: Publishers must never utilize dynamic probability adjustment algorithms that lower drop rates on the fly based on player spending history, item popularity, or overall server economy, unless this fluid system is completely and transparently disclosed beforehand. Absolute Zero Integrity: Setting the probability of specific advertised prize combinations to 0% while continuing to charge real money for a chance to win is legally classified as consumer fraud. If a reward becomes unavailable or blocked by code, its marketing must cease immediately. Historical Audit Trail Requirements: Compliance teams must maintain a strict, verifiable historical log of all patch notes and live-service database configurations regarding loot box rates. Any discrepancy between public tables and server-side realities can trigger devastating antitrust and deceptive trade penalties.