Indeed: config.sys autoexec.bat, EMS, HIGHMEM, and all those terrible early sound blaster drivers, mouse drivers, network drivers... I think the one I found hardest to get running was Quarantine. But it was definitely one of the best games. So imaginative for the era. And Australian! With music from some later famous bands! https://www.youtube.com/watch?v=QwO8XWbB1Pk&list=PLA5hK1g6CN...https://www.playdosgames.com/play/quarantine