Gravy Press' "Spell of the World-Weavers" is excellent.
It's hard to expand upon my thoughts about this entry because I think it may be perfect. That's not hyperbole. In judging based on the metrics of the game jam, "World-Weavers" is the total package in terms of writing, visual design, gameability, and theme.
Gravy Press, like many others, manages to pack so much into so little space. The layout and art make for an adventure that is visually stunning, incredibly playable, and immediately accessible. The font choices and layout pop amongst the strong visual design elements.
The science-fantasy adventure itself is a point crawl up a massive statue that is filled with challenges, puzzles, and conflict along the way. The use of Cairn to reinforce the themes of combat being something to be avoided due to its great damage helps encourage players to seek out clever solutions to problems.
Bravo, Gravy Press!