This is without a doubt a favorite! I loved the lost vikings when I was a kid, and always wanted to replicate the mechanics in a game jam but never had the guts to do it yet. A little jankiness aside, the puzzles design is very well done, the cats are adorable, and the music is great. I played it to the end, and I could easily see this as a full-fledged game, with story/dialogue, more cats, hundreds of puzzles, etc.
Great job indeed!