BoardGameGeek is not only the name of the web site you're currently browsing, but also the publisher of the "BGG Micros" line of games.
BGG Micros are a line of micro games packaged in a 5" x 5" cardboard sleeve (about the size of a CD sleeve), consisting of few components but fun game play. The line will focus on designs by top board game designers, brought to life with great art work from talented illustrators.
The first announced game in the line, "I Hate Zombies.", is due for publication in 2015, with more to follow!