Feathery Christmas replaces Santa's sleigh and reindeer with, well, pigeons. It's a cute, small story, and the puzzles are mostly abstract. Larry, the pigeon leader, needs you to feed his flock, and then you need to find a secret code in a church to release them to deliver a package. It's a bit tenuous, as are many logic puzzles (truthteller/liar and a general logic grid to decide which pigeons haven't been fed,) but it also has easy and hard mode, where the puzzles vary. The replayability was welcome, especially when you needed to find the shortest way through a wind tunnel with houses on easy mode, then the longest on hard mode. It's not super-robust, but it's more than competent, and the pictures are, well, legitimately artistic.
Having played on both easy and hard mode, I noted that besides the abstract puzzles, the item-trading you needed to do to get a ticket to the church was identical, as was acquiring bread. You also had a book that translated to and from Korean, and again this was cheery, but given that I don't know the Korean alphabet, I didn't get the full effect. There's also a puzzle of how many times to ring the church bell--again, reading the books you trade back and forth will show you this.
That said I really enjoyed the final puzzle where you guided a bird east through the screen. There are wind gusts that push you east to speed you up, until you bump into a house. The quickest solution isn't immediately apparent, and the slowest one seems almost counterintuitive. It's a fun, original bit of calculation that never feels like busy work, and there's no pressure either. You just keep trying again. It's one of those moments that shows potential for a great deal more, and I wound up thinking more about this puzzle than the rest of the game. And, well, it fit perfectly in with the theme of pigeons flying, while the logic puzzles for feeding bread didn't quite mesh. It was a neat conclusion. If the author worried this might challenge the player too much, well, I for one would disagree and would hope to see more of this from them, as opposed to the vanilla book-swapping and logic-chopping.
I'd have seen FC favorably even without it, though. In the end I hoped for considerably more, always a good sign, and so I was glad I could replay quickly on hard mode.