There was this one video game Wikipedia mentioned under "bad Nazi video games" or some shit called KZ manager that was literally a concentration camp resource management game for 8 bit micros and the like. I have no idea if it was made unironically or as a joke in the same way the Sarin Gas Cult simulator for the PC-98 was (or the games that came out of the EDF/imageboard crowd like Bullet to the Head of the NRA, Dorner's Last Stand, etc.), but someone uploaded a untranslated Windows version to IA.