A sweet little game. Soundtrack is excellent, visual style is pleasant too. The mouse controls I wasn't sure about at first but I got used to them (plus there's an invert mouse toggle in the menu).
PSA to players: I think it's best played with good stereo headphones, the main way you can tell where cats are is that they meow (only cats you haven't clicked yet will meow idly). Not impossible to play without but I think the best experience is when you do have them.
Despite the graphics being on the low poly side, it does seem to ask for a fair amount of juice from my computer while running. This isn't a critisism, just a note to potential players. Mine didn't have a problem (it just made more noise) but another 2 commenters said it ran slow on their system so be aware and check graphic settings if needed.
The one thing I did find a little annoying was the trees moving while you simply hovered the mouse over them. Having the environment react to interactions is good and make the game feel more tangible but whenever I would move past a tree, it would russle and I would quickly think this was a cue that there was a cat moving inside. I think the trees should still russle on a click but I don't think hovering should produce a reaction. Also the tree shadows didn't seem perfect on my machine.
Chill vibes all around. You don't need to collect all cats and yarn on each level but I felt like I couldn't leave the cats behind. According to the discription above, we are saving them from the cold by finding them, so it would be irresponsible to move on early. I'm pretty sure I'm on Santa's naughty list for opening so many presents that weren't mine to search for cats and yarn in them. But that's a price I'm prepared to pay to save the cats.