Sandboxels is an in-browser falling sand simulation game, with mechanics such as heat simulation, electricity, density, chemical reactions, fire, and over 500 unique elements to play with.
https://www.youtube.com/watch?v=1IwY7y72Wyc
https://www.youtube.com/watch?v=dkzDIDtKCIU
https://www.youtube.com/watch?v=OlU-6zVLBIY
https://www.youtube.com/watch?v=TgHnD-KRieM
