We always liked the Syberia series alot. Aside from all the Lucas Arts classics, we also (very) enjoyed playing the following 90/2000 (style) adventures:
- The Broken Sword series
- Broken Sword 2.5: The Return of the Templars | Download free version
- Runaway: A Road Adventure
- Runaway 2: The Dream of the Turtle
- Thimbleweed Park
- Edna & Harvey: The Breakout
- Edna & Harvey: Harvey’s New Eyes
Historic
- Flight of the Amazon Queen | Free at GOG
- Touché: The Adventures of the Fifth Musketeer
- Nelly Cootalot: The Fowl Fleet
- Ankh | Ankh: Heart of Osiris | Ankh: Battle of the Gods
Fantasy, fairy tales
- Discworld
- Discworld 2: Missing Presumed…!?
- Inherit the Earth
- The Simon the Sorcerer series - mainly part 1 and 2
- The Legend of Kyrandia
- The Legend of Kyrandia: Hand of Fate
- The Legend of Kyrandia: Malcolm’s Revenge
- The Book of Unwritten Tales
- The Book of Unwritten Tales 2
- The Book of Unwritten Tales: The Critter Chronicles
- The Whispered World
SciFi
You can start with The Uber files, which “is a global investigation into a trove of 124,000 confidential documents from the tech company that were leaked to the Guardian.”
Summary
Some examples:
As Bonus some older articles about their overall ethics and practices: