Vivendi Games Mobile was the publisher responsible for bringing the Crash Bandicoot universe to phones. Following the success of the console version of Crash Nitro Kart (2003), the mobile sequel was released around 2005-2006. It wasn't a direct port of the console game; it was a unique experience built specifically for the limitations of mobile hardware at the time.
Since Android cannot run .jar files natively, you need an emulator that mimics the environment of a 2005-era mobile phone. crash nitro kart 2 android game download