I really enjoyed this game! Using the colour and size of the Ornaments to determine its value by a base 2 power. Very 2048-esque with a the physical aspect of the ornaments making it harder to build up to the larger size. Until you get to the Blue Dog ornament! Which is much smaller in size and saves a lot of space! 
Seems really nit-picky to say but nothing explodes per say.... they combine. I appreciate how they are destroyed and re-created, but explosions are defined differently.
All-in-all, its a fabulous game, the music is catchy and Christmasy. The gameplay is addictive for people like me who are driven to see what the next combination looks like. The high-score system gives the player a goal to score higher. Well done!