Originally Posted by Toni Wilen
Serial link games generally require very low latency which makes them impossible to work via internet. LAN may be possible but I still have not managed to finish LAN (ENET) serial port support..
I can see games that run via Null-Modem cable having issues over an internet connection. Would Modem-based serial games be similar, being how slow a dial-up connection would be and the distance between 2 connected computers.