Its a fast-paced, juggle-based 2D metroidvania that stands apart for a couple of reasons.
Firstly, your characters magic sword is also your means of illumination, and the levels are gloomy.
And secondly, the whole juggle-based thing.

Maintain it at any cost by striking fire sources and protect it to better see the enemy attacks.
You will find that your incendiary attacks are all the more potent when performed against aerial foes.
Master your flames to hurl enemies and juggle them into ashes, the Steam page goes on.
Im not sure thats how thermodynamics works, but Id be a fool to complain.
There are also fire gems you might mix and match to unlock spells.
I hope those are genuinely revelatory revelations and not, for example, unlockable wallpapers.
Nocturnal 2 will be lighting up screens in 2025.