Correction on my own post, since it is already out of date.
The build that is live right now has sound. Strike the "no audio at all" line: it was true when I wrote the post and it is not true of the file that is up (7.1). What is in it: a looped bed, a gust cue, a cup cue, and two synth layers, one that rises through the tell and one that tracks how much flame is left. No external files. It all rides inside the one document.
Second thing, found after the post went up, and it is against me. The top grade needs the flame at 45 percent when you hand over. Running costs flame every second, so that grade rewards letting go late inside the tell rather than reading it well. My own clean run ends on a spark. If you play it and land low, that is my balance and not your reading, and I would rather say that than let it pass for skill.
One question I actually want answered, and it is the reason the game exists: was the flame you handed over bigger or smaller than the one you were given, and did you know which before the card told you?