Usually I’ll just make a standalone prototype of a concept then forget about it.
However for full game designs, I’ll instantiate a script into the explorer root with;
Instance.new("Script",game) -- ran on command line
Then write the code concept, dependencies, links, interactions, mechanics, guis, etc in this script in a format similar to @ForeverHD, which works well if I’m in a team create session.
In team create I may also write a second script for development logs or to do list.
This actually gave me an idea for a Plugin…
Would anyone use a trello style Plugin for managing projects?
Trello with a Kanban page sounds useful.