(Online Interactions Not Rated by the ESRB) Singleplayer, Local 2 Player Co-operative, High Definition. Play Flock!, the hilarious herding hootenanny of intergalactic proportions! Use your UFO and its alien beams to herd a variety of cute, cuddly animals across a patchwork landscape and into your Motherflocker.  With over 50 interactive levels and a side-splitting sense of humor, Flock! is a sandbox action puzzle game like no other.