This is just an experiment with exporting a particle animation to Alembic format (.abc) from Blender. I created the effect using similar steps as those shown in this tutorial (except I used a cube as the particle so it's lower poly, and I added randomness to the velocity, which I don't like in retrospect): https://youtu.be/k5WH5WY1Osc?si=Y1sfy87AwmzhI96m only up to the point where you start adding a material and adjusting render settings, since that is not necessary for export. Initially I just selected the emitter and particle and exported them as Alembic with default export settings, and overall it worked remarkably well. Sketchfab had no issue importing the animation. Unfortunately though, without any adjustments, the animation's two stages (rising up into the air, then bursting) came out overlapped. So I went looking for a way to fix that, and found a great Blender addon for baking particle effects by searching Gumroad for scaryplasmon CakeParticles. In future tests I will remap the texture.