Unzip it and leave the app wherever you want or move to Applications folder. Press play! Do not enter any serial number. JUST PRESS PLAY!

Minimum Requirements OS Mac OS X 10.7.5 Processor 2GHz Intel RAM 4GB Hard Disk 12GB Graphics 512MB Drive* DVD Input Keyboard

Recommended Requirements OS Mac OS X 10.8.2 Processor 2.4GHz Intel RAM 8GB Hard Disk 12GB Graphics 1GB Input Game Pad

HAVE FUN!