For the UI, I had to stick fairly close to our native Jigsaw Puzzle app's style to maintain branding consistency, but I took several liberties to make it fresher, younger, and a little more modern as our users were a primarily younger Messenger-using demographic.
Jigsaw Puzzle is based on Mobilityware's iOS game of the same name, but with additional social features that leverage the Facebook Messenger platform. In addition to solving puzzles, players have the ability to request and gift completed puzzles to one another.
Views of the Main Menu of the game, which features sections to view your personal puzzle library, receive a free daily puzzle, purchase new puzzles, and a Friends List where you can view and request puzzles from friends.
Views of the Puzzle Menu, or library of all puzzles collected. Players can choose to replay old puzzles at varying difficulty for extra in-game currency. I made small badges and overlays for the puzzle thumbnails so that players would easily tell if puzzles were new, in progress, or completed.
I kept the in-game screen as clear as possible to avoid clutter and maximize space for puzzle solving. An elaborate animation plays out when the last piece is placed, after which users can watch a promotional video to double their in-game currency reward.