NOTE: The Linux version is available on the author's website.
I had a little trouble categorizing Phyta. The goal of the game is to guide the growth of this strange black plant's branches with your mouse in an attempt to capture these flying golden glyphs, or "snitches" as I called them. It's very obvious that this wasn't intended to be an actual game. The screen scrolls up indefinitely, so there is no end, and the only advantage to capturing the snitches is to add more branches to your plant.
Other than the amount of branches you're directing at once and the appearance of the snitches, the mechanics stay the same. This isn't a bad thing, though. Nearly every part of Phyta is generated mathematically, making it impossible to experience the same thing twice.
The graphics are very much inspired by that of flOw and are made up of solid colors that give off a strange and soothing glow. If you combine the visuals with the superb one-song soundtrack, Phyta can be rather relaxing.
The main issue I had with Phyta, however, was its tendency to hog my CPU as the number of branches I had to control increased. After capturing only two or three snitches, my computer was at a near crawl. If you have a powerful computer, you probably won't have this issue, but it definitely ruined the experience for me.
There's not much else to say about Phyta. It's more of a graphical experiment and will probably take up only a few minutes of your time, but give it a shot because it's very unique.