"But why is Threes better? It’s better for us, for our goals. 2048 is a broken game. Something we noticed about this kind of system early on (...). We wanted players to be able to play Threes over many months, if not years. We both beat 2048 on our first tries. (...) When an automated script that alternates pressing up and right and left every hundreth time can beat the game, then well, that's broken. Is Threes a better game? We think so. To this day, only about 6 people in the world have ever seen a 6144 and nobody in the world has yet to “beat” Threes. But that’s what’s better to us as game designers. We worked really hard to create a simple game system with interesting complexity that you can play forever. You know, “simple to learn, impossible to master”. That old chess-nut…"
That's fine and all, but why do they expect the market to reward them for that? Do they assume the market will like what they like, and are bitter that the market didn't react how they expected? It doesn't always follow that an expert's opinion matches the marketplace or even the average user's desires.
2048 had easier and faster-paced gameplay, a lower barrier of entry, provided a better distribution model (just pass around the link) and it fostered a vibrant modding community. It seems to me like they are really missing the big picture behind what makes a game successful, if all they can come up with is: "2048 is too easy".
(Also, I was just pointing out that the apparent quote didn't match with the intentions of the authors' blog-post.)
None of those games are exact copies, and even the Three's designers admit these others are "inferior" versions. Are they arguing that you can't make derivative works? If they are, then like I said, I don't support that argument because I do believe that derivative works provide value and should be protected.
But to be honest, I don't think that's the main gist. When reading the article the main point that came across was one of annoyance that the original work was not receiving as much attention as the derivative works. As if the world cared who came first, or that coming first actually provided some intrinsic benefit (as opposed to a situational or contextual benefit).