[TOMT] Mid 2000s Cartoon Network Show

It had to have been around 2007-2009, it was probably an anime of some kind just from how I remember the animation, and most importantly there was a flash game I vividly remember playing based on this show... I don't remember exactly what it was about but I remember the concept being based around sort of a virtual reality pod of some kind of like Avatar where they climb in these technological beds or pods that transported them somewhere...