How can I simulate sand bolck in 2d which react with The platform below it and simulate realistic sand movement
Can you add more details or maybe a picture of your scene?
My initial thought is either the Marching Squares Extension or maybe the slice extension.
With the slice extension, you could slice a block into a bunch of smaller objects which have the physics behavior. You could then apply forces to the smaller objects or let gravity do it’s thing.
https://wiki.gdevelop.io/gdevelop5/extensions/object-slicer/
The link on the slicer page didn’t open for me but there is still an example project if you search GD for “slice”.
trid it and not exactly what I want