Well, there's this: https://github.com/Sanqui/2048-gb
It was posted on HN but didn't really take off, sadly: https://news.ycombinator.com/item?id=7434529
I bet had they left "Show HN: " off, it would've gained more traction. I have several theories behind that:
1) It looks more like a discovery.
2) It doesn't look like a self promotion.
3) The point of the article is at the beginning. I.e. a certain percentage don't read past "Show HN".
Again, just theories. No idea if this is really the case. But I don't remember many (maybe any) of the other 2048 clones making it to the first page being "Show HN" submissions.
The one that's done for Atari is in assembly. I made one in Prolog last weekend as an exercise since I'm learning Prolog. I figured it was a matter of time till the variation became about language implementation.
Just joking, I love these and I'm unemployed. Keep'em coming!