I was just seeking the abgx list of games to see which wave do portal 2 have but it says portal2 has 11th wave. and it contain waves from 1 to 11 but ppl here only discuss about wave 3 and 4.. i have downloaded this game but it says play dvd error when inserted in my xbox,, i want to know if it is of wave 4 so i will use the boot disk.. in fact i dont know which ixtreme i have. tekken6 works on my xbox which is of wave 4.. plz help i m very confused
