Tboia_-(usa)-nswtch-[base]-nsp-ziperto.rar -

The file refers to the Nintendo Switch version of The Binding of Isaac: Afterbirth+ .

Unlocking Nintendo Switch Games: OSC, Emulators, And NSP Files - Ftp

The Switch port is widely considered one of the best ways to play this modern roguelike classic due to its portability and content.

The filename indicates it is a North American (USA) digital package (NSP) containing the base game.