Just finished playing through the demo (on a Game Boy Color!) and I'm really impressed. If it hadn't ended on such a cliffhanger it would feel super close to a complete game. I find it strikes a pretty good balance between narrative dialogue / cutscenes and puzzles; I felt engaged in the story but not preoccupied with the game mechanics. It's giving me a lot of ideas for a similarly structured project I've thought of implementing in GB Studio. But more importantly I'm rooting for Ken & Fergus and I'll be waiting for the next release. Good luck!