How to properly set up a VPN on MikroTik for playing games over the Internet with friends?

Question

VPN

Hello, I have a MikroTik router (192.168.1.0/24), it has a VPN channel via PPTP (172.20.1.0/24). Rules for incoming GRE and port 1723 are configured. There is no white IP, Cloud is used. 4 users have been created to connect, everyone pings each other, they can go through \\172.20.1.x to each other and the gateway, but no one sees anyone directly in any game.
Google suggests that the game server (for example Warcraft) sends broadcast requests, they say I created the men, but my VPN does not care about this and it does not forward them.
The question is how to properly configure the router so that we can easily see each other? Well, and additional visibility in a network environment without WINS servers and other unnecessary rubbish like EoIP (only 1 Mikrotik, all the rest are SOHO)?
PS Do not offer third-party software (Hamachi-Garena-etc.), it is interesting to solve the problem itself, tk. it is important to understand this process.

Answer 1

https://youtu.be/aL308xEw9-k
https://secq.ru/tiklan
in your case, I think openvpn will help you

Answer 2

has anyone tried VPN CLient for games? how are you?