Team Cherry has not (and will not) port the game to the PSP. The console is simply too old. Your time is better spent playing Hollow Knight on a modern handheld like the Switch or Steam Deck.
A limited recreation of the Dirtmouth hub or the Forgotten Crossroads. Basic slashing and jumping mechanics. hollow knight psp iso
The Switch version is arguably the best portable experience available. The game runs smoothly in both handheld and docked mode, and all DLC (Hidden Dreams, The Grimm Troupe, Lifeblood, and Godmaster) is included. Team Cherry has not (and will not) port the game to the PSP
These are the modern kings of handheld gaming. The Steam Deck runs the PC version of Hollow Knight perfectly, with full mod support (custom skins, randomizers, Pale Court mods). If you have the budget, this is the ultimate Hallownest mobile machine. A limited recreation of the Dirtmouth hub or