Dr Robotnik's Mean Bean Machine is a classic puzzler from the 16 bit era.  Originally available on the Genesis back in the early 90's, it definitely tried to take advantage of the popularity of the sonic franchise.  However it really has very little to do with sonic.  It's a tetris style stack em' up where falling "slime balls" of various colors need to be linked by matching the colors in 4+ combinations.  Pretty simple, but can be very challenging and addicting!  It's extremely cheap here on Amazon, definitely worth 5-10 bucks.  But the best option is to pick up the "Sonic Genesis Collection" for Ps3 or 360.