He had always known it would happen, eventually.
He was old, now. Older than he had ever been. He felt old, and he looked ancient. Kronos had told him that his own son would kill him and take his place. It had never come to pass. But he was dying now.
The minor gods had been the first to go. Many of them were dead or faded already, and soon all of them were. The monsters soon began to fade away too, though a few of the most iconic ones lived on a little longer in human memory. Then the last of the Titans faded, Oceanus and Tethys, Thetis and Mnemosyne, Eos and Atlas and all the rest. Briares, the last of the three formerly mighty Hundred-Handed Ones, rejoined his two brothers. Helios pulled the Sun across the sky one last time and faded before sunset.
The first Olympian to fade was Dionysus, his son and the youngest of the Olympians. Wine was no longer as important as it had been, and even taking on the role of the god of beverages couldn't save him. There was no god of hamburgers, after all, or hot dogs, or pizza, and these were just as important in this modern society. The next was Demeter, his sister. There was no place for a goddess of agriculture in a world where agriculture was just as much the work of machines as men. After all, machines, for all they had evolved and became more important with every passing year, had not yet gained the ability to imagine. To wonder whether perhaps, perhaps, these miraculous things had an equally miraculous personification. Then Hestia, who had been largely ignored even in ancient times. Hephaestus. Apollo. Artemis. Ares, Athena, Aphrodite, and so on until it was only him and his two brothers. Then they, too, were gone, and it was only him, a decrepit king of a forgotten kingdom sitting on an old and cracked chair (after Hephaestus died, he had no way to repair the crumbling pillars, walls, and chairs, and besides, he was more worried about his crumbling memories) in an empty room full of dust and old memories. And now he was dying too. It wouldn't be long now…
The Sun began to rise, tracing its path across the sky. But now there was no chariot and no god.
Zeus, lord of the Olympians, last of the long-forgotten gods, died as the first rays of light shined on the crumbling ruins atop Mount Olympus.