Interesting comparison at reddit, IMHO:

https://www.reddit.com/r/Games/comments/4y1h9i/wheres_the_no_mans_sky_we_were_sold_on_a_big_list

I stopped playing after a few hours, hoping for updates that make the game more interesting, adding some of the promised features (see above).

pavo

Not this again...

But it's true. The trailers (and promises) show a very different quality game than the one we got. I feel a bit scammed.

Like many others I've requested a refund.

Yep, just a duplicate of this post and that's even visible on the first page of the forum as well...