PSP homebrew developers jojodu0010 and marc6310 have released v0.2 of their homebrew game Duck-hunt. Use the analog stick or the d-pad, whichever you prefer to aim and X to shoot - you get 35 points if you shoot the faster yellow bird, 20 points if you hit the red duck, 10 points for annihilating the blue duck, and -10 points if you shoot the black ducks.

changelog for Duck-hunt version 0.2:

    * graphic improvements
    * creating cheat codes now possible
    * added audio and analog stick controls
    * improved RAM management
    * you now have the option to aim using the analog stick or the d-pad
    * addition of game summary at the end of the game

Duck-hunt version 0.2