According to very crude completion metrics (Number of rooms created), I am about 23% done with 100RTBD. It's true that the actual completion percentage might be somehow different because rooms aren't all created equal, but I think it's still a pretty accurate representation on how the project is going. Multiplying by 4 (to make the math more simple) arrives at around 1852 hours total to make this game. Which would mean approximately two and a half years at the rate of two hours per day, or less than one at a regular 40 hours work week. Huh.
Time spent on the project so far: 463 hours
Currently working on: Continuing the story