Investor Presentaiton

Glossary of Terms Term Abbreviation AOS FPS (first person shooter) RTS (real-time strategy) MMORPG (massively multiplayer online role playing game) MAU (monthly active user) ARPPU (average revenue per paying user) Pay Rate MCCU (maximum concurrent users) Closed Beta Test (CBT) Open Beta Test (OBT) Tier One Update Tier Two Update Immersive Games Meaning AOS is a sub-genre of the real-time strategy genre, in which two teams of players compete with each other in discrete games, with each player controlling a single character through an RTS-style interface. A game in which the player plays from the point of view of the game character in three-dimensional graphics A game that is usually played from a third-person on perspective, in which the player controls vast numbers of in-game characters in a tactical scenario An online role-playing game that has a "massive" number (usually several hundred or more) of players who play concurrently Monthly total number of users who logged in and played Nexon's PC online games. MAU in this presentation is the quarterly average of such numbers. Nexon's PC online games include game developed and serviced by Nexon group, games developed by Nexon group and serviced by non-Nexon group publishers, and game developed by non Nexon group acquired publishing rights. The amount obtained by dividing monthly PC online game gross revenues by the number of monthly paying users. ARPPU in this presentation is the quarterly average of such numbers. Gross revenues used in the calculation are in-game sales, and exclude other revenues included in PC revenues such as sales from PC café time charge. The percentage rate obtained by dividing the number of monthly paying users by the number of monthly active users. Pay rate in this presentation is calculated using the quarterly average of such numbers. The maximum number of users concurrently accessing a game at a particular moment. MCCU is generally used to measure the popularity of a game A trial version (beta version) of a game offered for a certain period of time to a limited number of users or groups. A Limited Beta Test in an even smaller-scale trial mode of a game with fewer numbers of users or group A trial version (beta version) of a game a certain period of time without restrictions on participation. OBT is usually conducted after CBT. Large scale update to existing PC games typically launched in Q1 or Q3 around peak season Smaller update to existing PC games released throughout the year Games that are designed to be played continuously for hours and enable thousands of concurrent users to interact with each other in real time. Our games are architected to evolve over years., in contrast to packaged goods games, which often have finite story lines and comparatively less open-ended player engagement. © 2021 NEXON Co., Ltd. All Rights Reserved. 44

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