Quaternion is out! Get it here:
Windows: www.dropbox.com/s/lzqrs41k34qjqh1/Quater...0%20Windows.zip?dl=0
Windows (Developer's Build): www.dropbox.com/s/idckmyz5d48czbz/Quater...27s%20Build.zip?dl=0
Mac (Wineskin): www.dropbox.com/s/xu3440uviq0fwl1/Quater...Wineskin%29.zip?dl=0
MP3 Soundtrack: www.dropbox.com/s/bggbpzm13jhr0tm/Quater...0Soundtrack.zip?dl=0
Example Custom Level: www.dropbox.com/s/nioucdli50ck6hk/Quater...tom%20Level.zip?dl=0
It's been over two years developing Quaternion, and it's been a blast. I hope you enjoy it!
Let me know if you have any issues or other comments; I'd love to hear them. This release is not necessarily final, i.e. I will probably have patches in the future that fix bugs and add some minor features.
N.B. The Mac build is still a bit fragile at the moment. If it doesn't run, try launching it by double-clicking and make sure to put it in the Applications folder.