I was inspired by the transition from skeuomorphism to flat design. Skeuomorphic designs provide great affordances and reduce learning curves of a product, but look complex and need more network resources. With the development of front-end technology, browsers are capable of handling more complex and smoother user interfaces and interactions. Flat UI and a Half' is the collection of my 2.5D UI micro-interaction experiences to explore the possibility of 3D UI design.