The icon on the top right is how much sun you have (sun is the in game currency). Use sun to buy plants and use plants to protect your brains. Use plant food by clicking the plant food counter on the bottom left of your screen to boost some of your plants for a short amount of time. Don't let the zombies get to your house (the left edge of the screen). This may be Iaggy without TurboWarp: https://turbowarp.org/702158457?interpolate&clones=Infinity
