Give Songs of Syx a try. One guy, who developed the game in a shed in Poland so he could get away from his family. You can try the “demo” which is the full game just one version behind. Once he gets tired of developing it he said he’ll make it open source. Think dwarf fortress but you’re capable of having a population of thousands. Oh, and nevermind the race riots or cannibalism.
What if they were fired but kept showing up and being paid, then you just keep moving their desk and taking their staplers? Then get a couple of Bob’s to interview the entire staff after a few years of that. Oh, and make sure that any birthdays that get celebrated they have to pass their piece of cake to the next person and don’t get any themselves. Eventually “fix” the accounting error and just let things work themselves out.