CTRacer (City Racer) is a casual 3D MMO racing game in which players can build and customize their cars and compete against others for glory and advancement.
The game features various tracks to choose from, including several modeled after real Korean cities. The urban setting allows for many quests that will test your driving and other skills to earn you bonus unlocks and points for upgrades. Several battle systems exist for competition on different scales, and guilds can form with custom logos. Attention has been paid to make the cars handle as realistically as possible, and customizing your car doesn't stop at creation. There is a tuning system that allows for tweaks to be made all along.
The basic game is free to download and play, but further paid upgrades will be available via the item shop.