There was a story the other day on Hacker News about not being able to impress developers[1]: that there's a tendency amongst developers believe whatever someone else did is easy and they could do it in a fraction of the time. Almost every time someone hacks something together that sorta resembles prior art, what I see is a rush to label it a clone of something else that's really successful, as if the work of the really successful product could be cobbled together by anyone who has a couple of hours/weeks/months of free time[2].
All I'm trying to say here is that while this is very cool and the creator should keep at it because this could be a great start to something new and interesting, there's a whole lot more work to do to make a game out of this and let's collectively temper the implications that all Minecraft is is a basic terrain generator.
[1]: https://news.ycombinator.com/item?id=5807770
[2]: Another recent example where months of work was reduced to "we did it in an hour": https://news.ycombinator.com/item?id=5747418
Even if had been the more forgiving narrative, it still ignores the 6 months the New York times did doing interviews, compiling the photography, and writing the piece itself. The technical part was, comparatively speaking, the part that took the least amount of time on the NY Times's end. You can't replicate Snowfall in an hour, even with Scrollkit's help.
As for my scummyness: Didn't Notch do a somewhat similar thing with Infiniminer? Didn't he build on it, make it better/different, and charge for it early? Just because it isn't much more than Minecraft right now, doesn't mean it won't be in the future. And there are some big differences already, like the theme of the world, the block size, and the technology. Hopefully, in time I'll get to show how big an impact all three can have on a game! :)
As for Notch, I couldn't agree more with you: He is a very valuable member of the dev community, and someone I have an incredible respect for.
Do not most games get inspiration from earlier games? Aren't quite a few FPS-games quite similar to the ones preceding them? Or RTS-games? Aren't most games iterations, improvements and variations upon an existing foundation that we collectively build on to create ever greater games? :)
There are games that take entirely new paths. But most games, actually most GREAT games are built on foundations of many, many other games, while introducing something new. And that's what I hope Skycraft will do.
You are actually posting a common class of comment, which I don't much regard, but is unfortunately a formula for lots of karma.
X clone is not nearly as good as Y original for Z reasons. And of course the implied statement, or explicit in this case, that the hackers who made it shouldn't show so much pride or ambition.