Prayer, sacrifice, and offering, but Hades was rarely worshiped.
Of the worship of him in ancient Greece? Yes. Of him actually existing? No.
because if you worship him then i guess you'll have a good afterlife. after all, he is the god of the underworld and the lord of the dead! ;)
People that still follow the worship and praise of the Greek Gods, followers of Hades in particular. The dead are particularly influenced by Him, because death is an inevitability for everyone.
Not everyone stopped believing in Him. There are still quite a few people that believe in and worship Him.
Where ever they happen to be at the time, or in personally made altars. There was a temple, that's ruins still exist in Greece, dedicated to Hades and Persephone called the Necromanteion.
Zues the god of lightning was the most powerful and his brothers are second: posiden and hades. NO they don't worship them at temples, they are for the most part just legend.
Because he always played with toys and many people didn't play with toys so they didn't like him.
Hades ruled the underworld so I would think anyone who didn't want to be his bad side or someone on their death bed also he was an evil god that was told to be the god of the underworld by his older brother zeus. :)
Crete was the seat of Rhea's earliest worship; so most likely there.
Much as we do today in preying, it was because we all die and mourn those who die and so they preyed to the god of the dead.
There are some people that believe Hades to be real, and still worship Him even today. He was very much believed in during the reign of the Greek Gods.
They were called they Olympian gods. Among them were Zeus, Hera, Ares, Aphrodite, Hermes, Dionysus, Poseidon, Hades, and dozens of others.