In terms of visual style, I think miniBosk is going to be my favourite entry, which is saying something because there have been some beautiful entries! Those white-and-black illustrations are memorable and striking while setting the tone for this grim dungeon crawler. While it does very clearly have OSR blood, there are mechanics that are often seen in modern games, such as degrees of success (which I'm always happy to see). The system for map generation is certainly something I've never seen before and is definitely something I want to try out when I get a moment; honestly I think it could work for other games as well as Bosk.
The only nitpick I can really muster is the lack of examples for abilities for both enemies and PCs, but that's a nitpick. miniBosk is a delightfully dark dungeon crawler with some modern touches. Suffice to say I am now very interested in seeing Bosk Age when its ready.