If your game (for examples, Bless Online) is based on P2P, Mudfish could not be helpful to play the game because there are limitations as follows:
You can't create the game room for other users to access your room. It means you can't host the game.
You should use Full VPN mode to cover all other user's IP address. If not, your game client try to connect to some of users not via Mudfish. It results in the failure of connection or game boosting.
It points that depending on the physical location of users the connections via Mudfish could be better or worse.
Picking up a mudfish node which locates at closer to your location would be better. But I don't recommend to pick a mudfish whose RTT between your location and mudfish node is larger than 10 ms.
FAQ - P2P (Peer To Peer) protocol
Is there a way for mudfish to help with connection?
I don't think that there are multiple ways provided by Mudfish to play P2P based games because depending on P2P implementation it's very hard to find a best routing path or reasonable technologies.
Should I use Full VPN mode?
Yes. It's most handy way to play.
Should I use Proxifier?
Yes. If the game client is working fine with Proxifier, you can use it. Please check Mudfish with Proxifier link for details.
What's best mudfish node for P2P?
Normally only a way I recommend is that picking a mudfish node closer to your location physically is a better choice because
Other players could be located at various places. So if you pick a mudfish node far from your location, it causes a very long RTT (Round Trip Time).
If all other players are at same country, you might pick a mudfish node which be located closer to other players.