Just play NES !..

STEP 1
Dowlnoad Console Classix

STEP 2
Buy a Logitech controller (it should be one of the least expensive...)

STEP3
Install the controller's program on your computer

STEP 3
Open Console Classix, click "NES", pick a game, go back to the list of games, and set controls :
A=0, B=2

STEP 4
Mind the "Mode" button !... And use it to decide which device you want to use in order to make your character move on the screen : the "cross" on the left, or the joystick toward the centre...

STEP 5
If a stupid Facebook window keeps appearing, just make sure to close the window titled "test" or something like that, or come back to your game screen if it is still available.