Notes about the PNB file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries
, unused processes and other unfavourable system settings to identify slowdown issues.
The PNB file type is primarily associated with 'Pokémon NetBattle' by Smogon. NetBattle is an online Pokémon Battle simulator! It allows you to make your team, or any team, to your specifications and battle other people online. Information about the Pokemon Trainer and team chosen, packed into one file. This format is only used when saving Trainer and team data directly from NetBattle.