Complex sentence: When the PlayStation 2 was announced on March 2,1999, Sony president and CEO Ken Kutaragi used a demo of "Dark Cloud" to showcase the capabilities of the platform; many elements of the demo were not used in the release version of the game.
Split into simpler sentences: When the PlayStation 2 was announced on March 2,1999, Sony president and CEO Ken Kutaragi used a demo of "Dark Cloud" to showcase the capabilities of the platform. However, many elements of the demo were not used in the release version of the game.