I can only doff my hat to some top notch geekery, which I share below: "i noticed that the ighest scores on the endless waves hard is 2,147,483,648 and there are loads of people with coincidentally this high score. This just happens to be a power of two, which to me smacks of some sort of overflow error. Ie someones using a datatype which is a 32 bit signed integer (signed meaning one bit is reserved for a plus or minus, the other 31 bits to store teh number in binary format. 2,147,483,648 jsut happens to be 2 to the power of 31 you see. I think attempting to save a bigger score causes a it to fail. I may write to the developers though you think they'd have spotted this one by now"