I have this unique scenario where I would like to restrict access to a game on our iMac for only certain hours or only a max amount of time each day - yes both things that parental controls can handle - but logging out to a separate user account is not an option in this case.

Is there any tricky flitering/blocking software etc that can restrict one apps access? It could be the game itself or its internet access. I've tried using filtering software like K9 but haven't found one that will target an individual applications connection - they rather just restrict browsing acces... Thanks in advance!