I bought it on itch.io, and I didn't have to set up an account. Worked fine. The download speed was slow as molasses though.

itch.io is starting to get popular these days and you probably won't make a big mistake if you get the game there It is exactly like buying it on Paypal directly from me.

Regarding Humble, I don't plan to add the game there for the moment, my dev account seems to be limited. Maybe later? It's just not the good moment, my days have been quite busy lately, and I prefer to focus on supporting everyone. I hope you understand!

If you like the music of Catyph, the original soundtrack is available for download (free or pay what you want) here:
http://karreo.bandcamp.com/album/catyph-original-game-soundtrack

One of my favorite tracks is number 7 (Saad), but it's a matter of tastes. I think they're all interesting
Please support the work of Karreo and share! Thank you!

I noticed you say the "first" update.

I have downloaded that one. Are there likely to be more then ??