http://en.wikipedia.org/wiki/Combination_Lock_(game_show)

http://www.mobygames.com/game/dos/combination-lock

"Advergaming (a portmanteau of advertising and gaming) is the practice of using video games to advertise a product, organization or viewpoint."
"The first in-box CD-ROM cereal box advergames were General Mills' Chex Quest (promoting the Chex brand) and General Mills' All-Star baseball (starring Trix Rabbit and his friends playing baseball against Major League teams and stars)."
http://en.wikipedia.org/wiki/Advergaming