Recently somebody told me about this clone: http://gabrielecirulli.github.io/2048/
It's very similar. You only get 2's & 4's and must crash them into each other. I played it once and got to 512 which is 2^9. I thought that was good. But I'm sticking with Threes! Sorry Gabriele.
Join the numbers and get to the 2048 tile!