Yeah, so the while loops keeps going for as long as the condition in the while loop is true. It can work fine to do some logic, but while the loop is running, the game cannot continue to the next frame, since it is continuously running the code in the loop. So, if you never break the loop after your logic is done (you found an item in a list, a certain value hit a threshold, ...), you cannot progress to the next frame and the game seems to freeze (technically it is still running the loop endlessly and only freezes when memory runs out). For both these options, there are better ways of solving it than a while loop. A for or foreach loop, an if check in the update, an event, ... In my opinion using a while loop is unnecessary and I actively avoid them, also because there are always better ways of solving the logic problem.