Unlicensed games aren't as prevalent today as they once were. Every console in the '80s had some cheaply made shovelware title cluttering up store shelves, and gamers tended to just ignore them. Unfortunately, the less educated consumers did end up buying them, and that's the whole reason unlicensed product existed.

At the time, Atari faced a lot of competition, and it just got worse when Coleco and Mattel started crowding their market. Eventually Coleco made the Gemini, which was just a 2600 clone and could play Atari carts alongside their own, and Mattel started flooding consoles with simplified versions of their Intellivision IPs. 

The MNetwork was the division of Mattel Electronics that brought those games to the 2600, including Kool-Aid Man and In Search of the Golden Skull. 

Don't let that drawing fool you. MNetwork cartridges are exactly the same shape as their Intellivision counterparts but have an extra piece added to the bottom so they fit in 2600s. 

Be sure to check out the TV spot after the jump.