Thanks for the nice comments. It's fun to put those little games together every year. Takes me a couple of days to find and edit the new music, pick out some new eggs, hide them in the scenes, etc.
I have one "egg" object with two animations: "full" and "pieces". I use a paint tool to hide the eggs (by scaling, cropping, etc.) then I save the pieces and import those frames into "pieces". I place the pieces in the scenes using C3 and change a variable for each piece to indicate which "full" egg it comes from. Then the game engine I created four years ago handles everything else.
you made it really hard though! there was a nasty hidden egg in the coffee house.. I never even saw it.. I clicked it by mistake.. I must have heard that Winter Wonderland song about 5 times!!
Haha. Yeah, sorry about that. I knew that scene was going to be really hard so I actually hid 6 eggs in that one. There are two hard ones and you only need to find one of them. (One egg is covering the letter "O" in FLORENCE. The other one is super tricky. There is an egg shaped object on the counter. That seemed too easy... so I hid the egg in the egg shaped object's *reflection*. Yeah, I suck.)
The game you made/make for your son sounds awesome! I love using Construct for projects like these.