I saw now that if you drop the golem they destroy but when is quite high..
Here is an example where I was expecting they will explode..
Ah, that one is the problem with the golems not being dropped from high enough place (^.^;
You needed to throw the golems higher to kill them (either drag drop from higher or fling them up)
I thought it would be way too easy if I lowered the velocity change needed to kill the golems but it looks like I made the game annoying to play instead