All downloads contain the files needed

Duke Nukem PSP (Doom Mod)
Quake 4 for PSP (Doom Mod)
Fistful of Dollars for PSP (Doom Mod)
Quake 2 PSP (Doom Mod)
Doom 64 PSP (Doom Mod)
Hellraiser PSP (Doom Mod)
Goldeneye PSP (Doom Mod)
Awesome set of mods for the Doom Game, remember to post your mods in our PSP Game Modding forum