It takes exactly the original game but with a difference, when you start the game Mario is tiny, and the only way to grow is not to swallow mushrooms but to take coins, the more pieces Mario takes, the more he grows to become gigantic. Super Mario 64 Coins Grow is a hack rom that was created by Kaze Emanuar.
When Mario grows, the game gets harder because it is easier for him to lose his footing. Additionally, the larger Mario gets, the more difficult it is for the camera to follow him. If Mario grows too tall, he runs the danger of being blocked several times throughout the game.
You will need to restart the game if you wish to reset your height to its default value (Game Over does not work). In addition, if you want Mario to be his regular size, you will need to gather up to fifty coins first.
