Before Redesign
When I started working at Big Viking Games their flagship title was Fish World. It was (and still is) a top grossing Facebook casual game based around collecting fish and decorating tanks, but the UI and the user experience were firmly stuck in the early days of desktop flash games.
Sometime around 2014 we undertook the huge task of completely overhauling the entire game. While still constrained within the limited Facebook games canvas, we were able to maximize the usable game space while increasing the clarity and usability of the surrounding interface.
After Redesign