TCMU2009: Is there any way to redeem the DRM free keys for these games here on GOG? The ones that are on the site, I mean. I really want to get The Swapper and Dust, but I'd like to own them here too.
I'm afraid not, you don't get any DRM-free keys from Humble, just download links. If you want them from GOG, you'll have to wait for the next sale.
amok: It is not as much randomness, there is nothing really random in it, it more that the puzzles are based around non-euclidian space, and thereby becomes almost non-logical, which may seem as random... minor point maybe.
And does that make it frustrating? Or did you like it precisely because of this? Is it one of those games that are more of an "experience" than a game? And if so, is the experience a good one or just weird?