Note: If you already have an iso of the game disk, you can skip the first step.
PRELIMINARY STEPS
1: Download the newest version of DosBox from the dosbox website
2: Create a folder named dosgames in your Users folder
3: Launch DosBox, then quit immediately
4: Open the DosBox Preferences (with Textedit), located under Preferences, in the Library folder in your Users folder
5: Locate an item named blocksize=1024 under [mixer] and change it to blocksize=2048
STEP 1: MAKE ISO
1: Insert XCOM3 Disk
2: Open Disk Utility (Applications-Utilities-Disk Utility)
3: On the left side of the Disk Utility screen, there is a list of drives and disks. Click on the XCOM3 disk (assuming this is the only disk inserted in the computer, there should be two items with the CD icon- select the bottom one)
4: On Disk Utility's top bar, there is a list of icons. Click New Image
5: Set as no encryption, DVD/CD format (In tiger, select "DVD/CD master" as the format). Name it XCOM. This will save as a .cdr file on the Desktop. Once saved, change the file's .cdr appelation to .iso
6: Place the .iso file in the dosgames folder
STEP 2: INSTALL
1: Mount the dosgames folder as the c drive (mount c ~/dosgames -freesize 1024). The freesize command will ensure the game thinks there is enough space to allow installation, it is not neccesary after the installation is completed
2: Mount the image (imgmount d "C:\XCOM.iso" -t iso)
3: Go to the D drive (d:)
4: Type dir to see the contents of the D drive. It should show you a list of files in the XCOM.iso. Run the Install program (install)
5: Select the Optimal install size. It may take a moment to continue
6: Select the C drive. Remember that our dosgames folder is set as the C drive, so that's where the game will be installed. Use the default filename
7:The game should begin copying files now. It may take a moment. Go get some food and take a break from this exhausting dos programming
8: Setup the sound card
9: Select Autodetect and click okay. Perform the Sound Test. If you can hear the test sound, then click OK
10: Exit and save configuration
STEP 3: PLAYING XCOM3
1: It is now fully installed. You can launch the game immediately after you finish installation by typing "xcomapoc" at the prompt, however, let's go through the launch process before we relax
2: Quit and restart dosbox
3: First, type mount c ~/dosgames
4: Then, type imgmount d "C:\XCOM.iso" -t iso
5: Mount c by typing c:
6: Change the directory to the XCOMA folder by typing cd xcoma
7: Now launch XCOM3 by typing xcomapoc
8: To go to full screen, hit ALT + ENTER. Enjoy!
