thanks!
not that you asked, but I feel compelled to answer: the blending effect is achieved with a raymarched smooth minimum between shapes. if you’re curious about the implementation details, I can recommend this article by Inigo Quilez.
regarding performance, there’s a handful of graphics settings in the game to help with this — but even at the lowest settings, the game won’t run smoothly on all hardware. I didn’t have much time to optimize the raymarching during the jam, but I’m working on it now.