It’s a cool twist on 2048. However, there are a lot of small differences that make it harder to play. Merging is not very consistent. Sometimes pieces stop early, sometimes they merge multiple in one move, and the order of merging is back-to-front while 2048 is front-to-back. You also let the player move, even if no tiles have moved.
I like the color-changing and double spawns starting at the later rounds.