Kung Fu 2 (Kung-Fu Master Remake)
The original Kung Fu for the NES shredded hardcore, and this remake (loosely based on the arcade game Spartan X) remedies the tiny but nagging problems that ever-so-slightly bogged down the OG release, namely adding blood to every swift kick, unlockable secret characters and hadoukens. Hadoukens!
Nothing says classic like kicking little people in the shins, bloodying them up:
Download Kung Fu 2 here.