Simple question on the general theme you like your adult games to be in. Quick run down...
- High Fantasy - Swords, Magic, Monsters, and Mayhem. The world is a fantastical place and we just live in it. Example: Lord of the Rings, Dungeons and Dragons, most Isekai settings
- Low Fantasy - Realistic world with dash of fantasy. The world is strange and you're just finding out. Example: Dresden files, Supernatural, Adam's Family
- Realistic Fiction - Realistic world with fictional aspects. Just making your way in the world. Example: CSI, NCIS, Suits, Burn Notice, Breaking Bad
- Post Apocalyptic - Scraping by in the end of the world. Survival after the end. Example: Walking Dead, The Last Ship, Attack on Titan
- Science Fiction - It's not magic, its science! Includes cyber and steam punk where fantasy acts are explained with science and techno babble. Example: Cyberpunk, Golden Compass, Journey to the Center of the Earth,
- Space - SPAAAACE! Basically anything involving the empty void. Example: Star Trek, Battlestar Galactica, Firefly, The Expanse