thanks so much for the glowing review! nice comments on the graphics tech are really nice to read, because i worked in the game industry and i'm trying hard to bring some of that experience into the indie games i make. hopefully, that will give me the edge to make a living as an indie, despite the crowded market now.
godot engine is so awesome for making games like this. the bubbles are spherical GPU particles, and then I wrote some shader code to make them look like bubbles and to distort their vertices via the inbuilt noise functions.
good luck on ascending the leaderboard! i will say that the current WR of 4:11 is easily beatable, you just need to learn how to use scatterbombs.