Step 1: Go to Coolrom.com
Go to coolrom.com and click emulators, then choose non-jailbroken iphone.
Note: You MUST set your date and time before July 15th
Step 2: Choose You Emulator
I chose the gameboy advance emulator for the demonstration but you may choose any
Step 3: Download the Emulator
When it asks to download press "install"
Step 4: Choose Your Roms
Now click on the joystick in the top right-hand corner of the screen, choose the emulator you have and download a Rom to your emulator
Step 5: Have Fun
Enjoy your hard work!!!
If you change your date back it will not run so in order to play it again switch your date back to July 14th