Oh man, I played this D&D 4E hack called Philosophers & Demigods and I’ve been looking for an excuse to talk about it.
It’s set in mythological Greece but it’s more of a superhero game than anything else. Each major city or region has a group of heroes called a band, like “the Athenian Band” or “the Band of Thebes”, but they’re more friendly rivals than open enemies even when their home cities are at war. Instead their real enemies are titan spawned monsters, hubristic madmen, and barbarian warlords who threaten all of civilization (meaning Greek civilization).
Individual characters each have an origin which describes the source of their powers. These are fairly broad - Demigods are descended from or otherwise empowered by the gods, Philosophers have achieved a deeper understanding of reality, Hephaesteans have constructed clockwork armors or other mechanical devices, Olympians have perfected their bodies through training and competitions, and Volcanists have been transformed through contact with volcanic gases or other rare elements. (I’m probably forgetting one or two.)
Instead of a class you got two power sets. Like my character (a Volcanist) had Myrmidon which gives you armor and some defender-ish abilities, and Elementalist focused on fire so I could throw fireballs and set things on fire and, y’know, burn stuff. One of the others had a Philosopher who had Pankration (basically martial arts) and Oracle (she had some kind of supernatural senses and could evade attacks by seeing the future).
The skill list was mostly standard 4E and skill challenges were mostly the same, but all the equipment was just description on top of your powers. Feats were more big abilities like in 5e than the endless number of small bonuses.
I remember the last fight was against this massive sea dragon turtle thing that was besieging the harbor in Athens with an army of trident-wielding fishmen which I think were just reskinned Kuo-toa.