For those who don't know, 2048 is a clone of a clone of a game called Threes. There's a (long) blog post by the original Threes devs that talks about the issue of game clones. THREES - A tiny puzzle that grows on you. It's pretty interesting if you care about the game development process.

2048 can be beaten by an automated program that moves up left up left up left with a few random rights thrown in. Threes plays differently in some subtle ways, making it way harder and arguably more enjoyable.