Finding an Event Log entry for an appcrash event would also give you an error code that you could google for more information. That 'something' could be a Windows update, but tracking it down could be tricky. If you've been playing KATAMARI on this computer for a good while now, chances are good that something you've installed recently has created a conflict.
Sometimes this can be enough to identify the root cause, if for example it's a video driver or DirectX component. The details of the error message should give you the faulting module, which is the name of the.
The next step I'd take is to do as close to a clean boot as possible, start Steam, log the time and start KATAMARI, then use the Windows Event Log Viewer to look for a fatal application error.