Crazyracing Kartrider () is an online computer racing game. Nexon opened a beta version of this game in 2004. There are various kinds of karts and items that you can use in this game. The game has three major modes. In item mode, players can use items such as missiles, water balls, shields, bananas, and devils. In a speed mode, players use a booster. In flag mode, players try to bring back a flag to your team zone.