I have it in my head that there was one festival / games held in honor of Hades once ever 100 years. None of the books I have on hand say this, nor can I find out any info online. Does anyone know what I'm talking about? Is my brain lying to me?
I'm sure there were many, as Hades was an important divinity. The observance would be regional, as in Indo-European life a settlement and a region and even a household would have a single aspect of deity to which the inhabitants would dedicate themselves. Of course many chose the same, such as Apollo for regions and Hecate for homes. So in short you might have some digging to do, but the 100 years sounds like a good differentiator.
No there weren't, that's how this came up. At least that's the main theory I am aware of. Someone asked me if Hades was honored in anyway like the other gods, and all I could think of was maybe some catacomb somewhere and this game I have in my mind that may not exist. The Greeks didn't build temples or anything like that to him, there was only one potential affair he had that got stymied before it could take off, and he had no children walking around the earth like his brothers. The Greeks would just do some kind of quick prayer to the ground for him I think. I'm not sure if the Romans were different with Dis. But the honoring and worship of Hades was different and had a different character from the other major gods.
You are humorously positive, here. Hades was almost as important as Zeus in the theogony. In some regions he was even conflated with Apollo, the savior.
I get he is one of the three major gods, but that isn't the question. This might be why some people are surprised by the lack of cities, worship, festivals, etc dedicated to him: for example, Poseidon was part of the Panhellenic game cycle, Hades was not. I'm sure this has more to do with being god of the underworld, then his importance in the Greek pantheon.
I wasn't aware of his association with Apollo, do you have a source? Is this associated with those mystery cults that popped up in the Roman Empire? If so that isn't really what I'm interested in when I think of this kind of thing. I think I remember some remark by a Greek poet making a remark how he was the same as Dionysus, but that's all I can think of. I remember Apollo got associated often with Hyperion / Helios.
You're thinking too narrowly. Have you never heard of Zeus Cthonios? There never was a monolithic Greek religion. Even the three high gods were thought by some to be female, for example. The best modern equivalent would be Hinduism. The religion is what the locale has said it is.
I am thinking narrowly, I'm trying to focus on one question. I am aware there wasn't a monolithic Greek religion, but that need not be brought up for this thread. I am also aware I don't have a PHD in Greek Myth, I hope I don't come off trying to sound authoritative on this, as I'm not nor am I interested in any technical conversation.
I don't see why you keep trying to go meta. I am however biting on the info you throw out I've never heard of like Apollo getting associated with Hades. I am trying to see if I got it mixed up with anything, or if it rings a bell somewhere in the recesses of my mind. Either way, that's side info to my OP. I found what I was looking for online.
Also, I think what you're using for Zeus is an epithet and title. It's not like associating Helios/Hyperion with Apollo, where Helios ends up getting merged or confused at times with Apollo.