In case anyone was wondering , I have had games I sent in with just the disc(no case or instructions) accepted as acceptable. This includes DS PSP Wii and 360 games. Whenever there is an outrageous trade in value I always lock them in with the Do Not Return Items option because the acceptable is usually still a positive flip when transfering credit from Gamestop to amazon(ie: all those terrible DS/Wii games last month that traded in for $30, most had an acceptable value of about $24 with the lowest usually around $21)