Drop of blood stain on a tile?

Hi,

I have a lot of blood in my 2D game and it would be nice if I could somehow show the blood stain on the tile(s) the blood particles hit, somehow affect the environment.

How can I achieve this thing?

Thanks

You could make the blood particle system emit sub paticles when they hit the floor. The sub emitters would just be one single particle, a horizontal billboard with the blood puddle.

I’m not sure how 2d collision works though.