This is a really cool concept!
The only time I've seen something similar to this is UnMetal, a Metal Gear Solid spoof game framed as a shaggy dog story. where you could pick responses to alter the gameplay of a section. Often unwittingly.
I only got the good ending where I buy an equal boat and die happy. I tried one more time, and might have tried again, but I knackered my wrist digging for treasure. And pulled my back, That was probably bad ergonomics on my part.
Cool entry!