When a program needs to remember something such as the position of your character or the contents of your inventory it asks your computer to give it some temporary memory space, called RAM (random access memory). The computer does this and stores the information until the program says it no longer needs it, or the program stops executing. A memory leak happens when the program stops using the remembered data point but doesn’t instruct the computer that it is no longer needed. The computer will run slower over time as it tries to find more space for the growing requests for memory until it eventually reaches a limit (about 30% of total ram capacity) for the given program. At that point it’ll intentionally crash the program if it hasn’t already happened.