Anyone who grew up with a Nintendo Entertainment System, and has a taste for the ultra-violence, should give this game a try: http://abobosbigadventure.com/fullgame.php

It’s a bloody mish-mosh of classic, and not so classic, characters and gameplay styles from a slew of NES games. You start of in Abobo’s home turf of Double Dragon, only there’s more than just street thugs trying to take you out. Bosses from Kung-Fu, goombahs, and Donkey Kong are only the beginning of what becomes a huge list of enemies you must punch and kick your way past in the most sadistic fashion. Civilians from River City Ransom become health power-ups, as Abobo rips their heads from their shoulders and with the flick of his wrist pops them his in his maw. It is not a game for the faint of heart.

I would go further, but that would spoil surprise after surprise that this game constantly delivers. So stop reading this and go play it now!