It's #SteamNextFest, and like always, there are a lot of demos, and I'm gonna try out as many as I can. However, there's some demos I can already recommend.
Mythmatch
Little Nemo and the Guardians of Slumberland
MIGHTREYA
Rollin' Rascal
Altered Alma
SoulQuest
Enter the Chronosphere
SokoGhost: Unfinished Business
Gunboat God
Fallen Tear: The Ascension
A Planet Full of Cats
FLATS FULL OF CATS
GRIME II
Curse Chapter: Dawnthief
Phonopolis
The Mermaid Mask
Planet of Lana II
Hidden around the World