Probably the most highly-anticipated demake of all time: Final Fantasy VII!
Tried to stay pretty faithful to my memories of playing FF7, as well as keep pretty close to Game Boy specs.
Hugely important for this to actually work is the idea that tiles can be flipped and palette-swapped individually and "for free" - I don't know if that's actually true. That's how most of the BG and UI is made, with the only sprites here being the boss and characters.
Since there are already 10 sprites on every battlefield scanline, I imagine literally any attack or spell would involve fadeouts or flickering.
Boss is Aps: https://finalfantasy.fandom.com/wiki/Aps