I've been building this action roguelike around fast, intense, brawly combat. But honestly, one of the most magical parts so far has been the portals between worlds.
You go kingdom to kingdom, felling kings, taking their crowns and absorbing their powers. Each time you do, a portal to the next kingdom opens right in front of you.
You can see into the next zone before you even enter it, run straight through without a loading screen, then turn around and look back at the world you just left.
The engine in
@spawn is what makes this possible, and it even supports portals between different games.
Funny how something I didn't plan as a core part of the game is turning into one of my favorite things about it.