This guide will tell you how you can get infinite coins in PvZ GOTY edition very easily!

Step 1:
Go to puzzle, then select i, zombie

Step 2:
Beat i, zombie but when you're eating the last brain you have to listen. There is a crunching sound when a zombie is eating a plant, brain, etc. It takes any zombie five crunches to eat a brain. So on the last brain you must click the menu button on the exact moment before the fifth crunch.

Step 3: Go to main menu then back to puzzles and re-enter i, zombie.

Step 4: When you enter i, zombie, click continue and it will take you back to the exact moment you left off.

Step 5: The bag of coins will appear once you continue collect it and it will take you back to the puzzle menu.

Step 6: repeat steps 3-6 and now... YOU HAVE THE INFINITE COIN GLITCH.