This is a homebrew Atari 2600 boxing game based around a popular, but crude, internet reviewer called the Angry Video Game Nerd.
In "Angry Video Game Nerd K.O. Boxing", you fight the cast and characters from the hit Internet show: The Angry Video Game Nerd.
In case you are not familiar with the show, the Angry Video Game Nerd is an Internet show based on reviewing old video games. The "nerd" is a retro gamer like us and, like us, has been aggravated playing terrible games. Often, in the past, we would buy a game (or most likely get one as a gift) only to find out it was TERRIBLE!