Karateka/YMMV

• Awesome Music: The original. For something that uses only the PC speaker, it's very impressive that the music really sounds like it's being played using electric guitars.
• Game-Breaker: In the remake, the Chi Attack is this during the latter part of a boss fight. As long as you're not wasting it on mooks (who, given the relative simplicity of the game, you shouldn't need it for), it gives the player a free block from any attack or group of attacks as well as a longer combo string.
• Goddamned Bats: The falcon.