The presentation is very clean, and the tutorial is well done. Gaia really sets the scene well, and the music is quite relaxing. A game about maintaining ecosystems is an interesting idea, but that idea gets diluted by the gameplay, where instead of maintaining ecosystems, the game is about rotating the cards until you can find a place to put them. Doesn't really allow for long-term strategy.
Speaking of which, you mentioned in your feedback for my game that rotating puzzle pieces with the right mouse button (RMB) did not feel intuitive. In your game, you have the option to rotate pieces with the mouse wheel or on-screen buttons, which work fine on their own. Although the mouse wheel is the more intuitive option by far, since the rotate buttons prevented me from moving the piece around freely. Still, it would be nice to have the RMB as an option as well, as that's what I immediately tried at first. I get that this is a "different strokes for different folks" kind of thing, so do with that what you will.
Lastly, I want to commend you for including networking in your game. It's a creative way to incorporate the theme of generosity, and I know from experience that networking is really hard to do. It's cool knowing that I can give away cards to other real-world players.