There are always limits to what a program can do. The only fix is to choose large enough integers (and appropriate units) so that you can represent long enough times / large enough sizes / etc. that anyone could reasonably encounter. What sizes make sense also include how they impact performance and for a game from the 32-bit era, a crash (controlled abort or not) after over two years is probably a better choice than slowing everything down by using a 64-bit integer.