This is X Plane 9 the full version game, disk 1 of 6. The entire package is over 70 GB of the whole world. (Note you need a good computer to run this game... I have a dual core 2.66 GHz with 4 GB RAM, 256 MB VRAM and a 300 GB HD, iMac!) This .iso file MUST be mounted by Toast 9 for it to work as the run game disk, otherwise you will be put in "DEMO MODE" and you don't want that. When mounted and the DVD appears on the desktop it MUST read "XPLANE9" or it won't work. You wont be able to install all of the scenery, but you will have all the aircraft, weapons and full control/access. I will upload the other disks soon... ALSO... VERY IMPORTANT!!! YOU MUST DENY CONNECTION HOME OF THE SOFTWARE AND BLOCK PORT 80 (ON MAC) OR YOU WILL LOSE FLIGHT CONTROL ALONG WITH OTHER FEATURES... if it does happen, just restart game and remount iso file and don't let ET call home!