Versions:
1.0.x
The initial release version. It featured 20 playable characters and a customizable Radiator Springs.
This is the only version featured in the PC version of the game. It did not benefit from new content, its servers shutting down way earlier as a result in 2017.
1.1.x
The Christmas update. It added holiday decorations, track pieces and a holiday-themed Radiator Springs.
Max Schnell was added in this update.
Chinese New Year decorations were later added in this version.
This version of the game, both on iOS and Android are LOST VERSIONS and cannot be retrieved anymore. The only hope is a fan-made restoration patch.
1.2.x
The Ice Racers update. The game maintained its winter theme without any holiday decorations.
From here on out there was a "Quick race" button implemented to jump straight into a race.
XP and Fuel were now numbered to establish the XP left to level up or fuel quantity.
Pyotr Racinov was added in this update.
Long Ge was later added in version 1.2.4b.
Because the archived version is 1.2.1b, Long Ge isn't present but he can be modded in.
1.3.x
The Neon Racers update. It's the last update the game received.
A day/night cycle has been added to this version to enhance immersion.
A daily log-in system was added to reward players based on their commitment to the game.
Sending off cars was added to this update, a great way to earn XP.
The ability to select any car on any track during practice race was added in this version of the game.
Komodo, Yokoza, Shifty Sidewinder, Idle Threat, Blue Grit and Sandy Dunes were all added in this version.