There are a variety of challenges when trying to make a direct connection accross the web, the biggest being firewalls (security software). We can't give you specifics on each particular firewall, as there are tons of them, however we can point out that you need to have the following ports open for UDP/TCP traffic: 47624 to 47624 2300 to 2400 6073 to 6073 If you do this, you should be able to connect to your opponents computer and conduct a real-time game. People have done it successfully as of 2022. Additionally, people have reported success using the application Hamachi from VPN.net - it will allow you to connect up to 5 computers at one time for free.