In A Mind Forever Voyaging , Meretzky attempted to address social issues .
Infocom 's success was declining , and the 1988 Zork Zero was one of Meretzky 's last titles there .
In A Mind Forever Voyaging , Meretzky attempted to address social issues , but Infocom 's success was declining , and the 1988 Zork Zero was one of his last titles there .