For the next phase you have two choices depending on your project.
1- Convert your bitsy / layout to inky. If you are confident with your current prototype make a playable text-based version of it. This will be the basis for your actual game.
2- Write a narrative prototype of your game in Ink/Inky. If you are still unsure about your project structure as an open spatial environment, you can use inky to prototype different narrative structures, different kinds of choices.
It has to be playable in its entirety: all the areas, characters, chapters, endings, have to be there. (it must also function as an asset list)
It should have placeholder content for audiovisual aspects: you can have a passage that says “breathtaking vista of Emerald City”.
Avoid generic and heavy lifting placeholders like “clever puzzle” or “minigame”. You will likely not have time to develop ad hoc gameplay parts.
Let’s talk about narrative design and do some brainstorming
Let’s talk about Ink and Inky
Let’s look at some notes about Writing Dialogues for games