- How to play Heroes 3 online.

Yes, we created a room, and the provider has a local network. But then, do we need to connect using the IP address that the game displays? Like "Your IP is ****"? We tried that too, but it didn't work. Maybe the problem is with the IP addresses?...

You both log into Hamachi, one creates a network, gives the other the network name and password, and the second player joins the first player's network. Then, both of you minimize Hamachi (don't exit).
Then, one of you creates a game through Multiplayer, using TCP/IP, and the second player also joins through the same mode. In the game, the second player clicks the "Find" button when the first player has created the game, and enters the IP address that is displayed next to the first player's name in Hamachi.

In the future, when you play again, the second player won't need to manually enter the first player's IP address in the "Find" button. The first player will be displayed with an open door in the game, and the second player will simply need to click "Enter," selecting the correct door in the game.