Bricks as water, could happen. But as a liquid, that's just impossible. Haven't people read making water in engines is like trying paint the sea.
Engion changes would be needed, but it would work.
Does Source do this?
^^ the brick physics arn't real physics though, they are just a new death sequence with collision. or so I've seen, but I could be wrong.
So like a bunch of miniature gravity based projectiles that can dissappear after like 1 minute, to make like a river or a water fall. Much like the pong projectile, is something like that possible?