Minecraft question: We are considering getting Minecraft for the boy. If he has the PC/online version, can he pick up the game where he left off if he plays on the xBox later? Or the iTouch? (I know you have to buy separate software). We are just trying to figure out which version is best if the game cannot be continued on different "devices" (PC vs. xBox vs itouch) or which modality is better for certain goals.