Magic
No Magic: Magic of any kind doesn't exist in this world. Spells and magic effects don't function. Consider the variants to handle the lack of magic items or convert magic items to tech items using such advanced technology as to be indistinguishable from magic.
Low Magic: Magic is mysterious and taboo. The few practitioners of the mystical arts are feared or shunned. Again, consider the variants to handle the relative scarcity of magic items.
Common: Magic is an accepted fact of everyday life, though, like computer programming, most users don't bother learning the details of how it works. Magic portals and gates can whisk travelers “in the know” halfway across the world or to the other side of the multiverse.
High Magic: Magic and magical items are commonplace in society, perhaps even more than technology. It might be as easy to learn spellcasting as it is to learn a new language. Many tech objects are replaced with magic objects that cost the same and serve the same function, like handheld magic mirrors instead of comm units. The fantastic is never more than a stone's throw away.