Here’s the port of Worm Warrior to the PSP:
To install, copy the ‘WormWarrior’ folder, in WormWarriorPSP.rar, to the ‘PSP\GAME’ folder on the memory card or PSP.
The game will work on a PSP with normal or custom firmware, as it was signed with PSPcrypter. If the signed version doesn’t work on a PSP with custom firmware, copy the EBOOT.PBP in the ‘Alt’ folder to ‘PSP\GAME\WormWarrior’ folder.
To play use:
Directional Pad to move
X to shooter
Start to start the game
Home to exit.