Vector Kong is not a romhack of Donkey Kong. Instead, it’s a LUA script, run through MAME’s plugin support, that makes the graphics display as if they were on a vector monitor.
It doesn’t leave the game unaltered otherwise: the only boards playable are Girders, and it also skips over the scene at the opening. Still though, it definitely looks sharp! Here’s hoping creator 10yard applies this treatment to the rest of it someday!
Vector Kong (github)
