Air level of the map.

Alright, I guess you can't be convinced. I initially thought you'd talk about UFOs, but you're talking about spirits...

The idea of spirits actually arose spontaneously. Moreover, the world of spirits has existed with people since time immemorial. And there shouldn't be any scientific and technological progress in the world of swords and magic by definition. And excessive embellishments sometimes don't improve, but worsen the game (for example, in Wake of Gods). The game should be intuitively understandable and logical, i.e., new features should not contradict the main game (for example, like Forge). Otherwise, it will already be a different game.