From the app page:
Color fusion is a relaxing puzzle game where the goal is to make beautiful particles of light reach their targets. For that you use pieces that allow you to reflect the light or change its color.
You have 65 official levels to beat, as well as access to all the levels made by your fellow players.
Good luck, and don't forget to enter all of the other Christmas giveaways as well!
Note: Five winners will be chosen at random. The giveaway is open worldwide. The winners will be emailed via their Rafflecopter email address once chosen, and will have three (3) days to reply to it. If you don't reply within the three days, a new winner will be chosen at random.
a Rafflecopter giveaway