Hey! Thanks for the feedback! Your final note about the oil speed I think makes it clear to me that it isn't easy to actually know if you reached the end of the game or not. There is a final line to the story that you can only reach by surviving a specific amount of time, but also is nearly impossible to reach if you had just let the oil go for more than a small fraction of time.
And you're right, the goal here was much closer to an immersive experience than a complex traditional "fun" loop. Although in terms of gameplay mechanics the code was unfortunately not simple to do haha especially the CCDIK to make a multi-axis robot move like that. (Animations would have been far easier probably lol)