AUX B is a free Android puzzle game developed by Christian Schnellmann. It falls into the subcategory of puzzle games and offers 40 free levels to play. The game's premise revolves around the B-Sides Music Festival in Lucerne, Switzerland, where tons of audio equipment is connected using cables. Your objective is to connect the cables correctly and bring the music through the different components to reach the loudspeaker and progress to the next level.

The game has a simple yet engaging gameplay mechanic that challenges your problem-solving skills. With 80 levels, the game offers a decent amount of content to keep you engaged. Moreover, if you complete all the levels before 15 May 2015, you stand a chance to win one of three festival tickets for the B-Sides Music Festival. Overall, AUX B is an enjoyable puzzle game that offers a unique twist on the classic puzzle genre.