I do like that the numbers have more color variety in this version, however the Best text field resets with every new game - is something broken?
I played the original 2048 and liked it a lot, but the game has a lot of flaws and in copying the game, you've copied those flaws yourself. The game has a nice difficulty curve - each new highest number only means you're halfway to reaching the next, and as numbers become increasingly difficult to combine the game ramps up in difficulty and squeezes you into a smaller and smaller space.
The issue here is that it's simply too easy to cheat. I mashed two buttons forcing things into a corner, occasionally shifting it back and forth if it got stuck, and acquired my high score of 5.3k without really playing the game at all. Realizing how much fast you CAN make moves demotivates the player from thinking before making a move and in the end the game just ends up being a lot of luck or just really tedious.