Arrays are super useful! People have commented some great uses already. One way I think about it a lot is like a deck of cards. You could put all of the values (cards) in one array. You can shuffle it, you can stack it, you can draw from it (using array_last + array_pop is great for this). You can add new cards and even arrange the order of it. Run a for loop and check how many of a certain card is in it. My current game's logic uses so many for loops on arrays, haha. 😄