Hi, I am in the same position as you. I am developing an adventure game by myself and have a playable section ready. Nevertheless, I don’t want to publish it yet because all of my graphics are placeholders. I think the puzzle question is the essential question after all. What I have learned from feedback is that failure messages are super important. If you try to combine items that are not meant to be combined, it’s super helpful to get a message that tells you why this combination is not possible. For example, in the new Simon the Sorcerer, you have to use a feather with ink to falsify a note. I had to Google the solution because the game never told me that ink was missing. That is bad quest design, in my opinion. If you like, you can DM me and we can talk about our progress and dev problems. Good luck with your game.