Nice puzzle game. I appreciate how you had to match the face down unlike a lot of other similar games. The timer added a nice level of pressure to solve the puzzle efficiently which is great for puzzle games.
It did feel a little weird as I'm guessing it was physics based not locked to the grid. I found it quite easier to move off the grid and inbetween grid spaces. I was also able to move over the gaps and turn on the spot when against a wall. You might want to address these by making the game fixed to a grid.
Overall, nice job on this!