I think there are 50 recognisable puzzles in the collage, mostly featured on my blog, although some haven't... but if you're a serious puzzlist, you'll recognise them too!
If you email me a list of puzzle names and designers and you're either the first with full marks or the one with the highest number correct, I'll spot you a puzzling prize. [Mental note - buy a prize from Wil!]
My email address is my firstname dot surname at gmail dot com.
Click on the pic for a full size version...
...and Merry Christmas and Happy 2015
to all my puzzling mates around the world!