Because the 320x240 version often had more available memory than smaller builds, it sometimes included 2-channel stereo audio if the phone supported it, a luxury at the time.
Diamond Rush is a classic puzzle-adventure Java game developed by Gameloft and originally released in 2006. The "320x240" specification refers to the standard screen resolution for landscape-oriented "feature phones" (like many Nokia models) on which this game was famously pre-installed. diamond rush 320x240