Crazyracing Kartrider

KartRider features fictitious fantasy vehicles and branded game models based on real-life cars, developed in collaboration with companies such as BMW Korea. The service was shut down in 2023 in South Korea but continues to operate in China.

• Title — Crazyracing KartRider • Developer — Lodumani Studio (2004–2011) Nexon (2011–2020, 2025-present) Nitro Studio (2020–2025) • Publisher — Nexon (South Korea) Tiancity (China) Gamania (Taiwan) • Genre — Kart racing • Platforms — Microsoft Windows • Modes — Single-player, multiplayer

The game offers a variety of game modes, primarily based around collecting items or requiring the player to drift to gain boost items.

The initial South Korean service started on June 1, 2004. Localized releases launched in Mainland China as PopKart on March 18, 2006, and Taiwan on January 4, 2007. A closed beta for an English release of KartRider began in America on May 1, 2007, and ended on May 31. The open beta began on October 2 and ended on March 19, 2008. All references to the game were subsequently removed from Nexon America's website without further statement. Later localizations, which are no longer serviced, were released in Thailand, Vietnam (as BoomSpeed), Russia, Indonesia, and Japan. The Taiwan release was shut down on January 31, 2023, followed by the South Korean service on March 31. This leaves the Chinese localization the only in operation. A relaunch of the South Korean service was announced on June 23, 2026.

Nexon America released a mobile version of KartRider for the Apple App Store under the name KartRider Rush on March 11, 2011. This version closed later on as well. A KartRider client released for Facebook called KartRider Dash was shut down in April 2014. In May 2020, KartRider Rush+ was released on Google Play and the iOS App Store, the latter already having provided a Chinese version the year before in 2019. A sequel, KartRider: Drift, was released in 2023. The game was a commercial failure and shut down on October 16, 2025.