Super Difficult.
A black cat Alex and his 100 friends.
They are hiding in the town.
Find them all !!
This beautiful cityscape is Tarragona in Spain
where there is the World Heritage.
Special Thanks
Image
http://www.ashinari.com/
http://towncat.yokochou.com/
http://www.yunphoto.net/jp/
Sound
http://pocket-se.info/
http://taira-komori.jpn.org/freesound.html