I really loved the 17776 vibe of this. That idea of winning at immortality is particularly plot catnip for me.
I do think some of the color choices, combined with the right-alignment of the text, made it hard to read at points.
There were, ultimately, few choices. The core question of "end or continue" is very in line with the themes and felt very earned. But there were times in the sections where I wanted to be cut off from choices, especially when remembering, since it was a plot point that the POV character's memory was fading.