Here's the list of supported games: https://wiki.scummvm.org/index.php?title=Category:Supported_...
If you're looking for recommendations...
- Zork (the OG, and sequels): https://wiki.scummvm.org/index.php?title=Zork
- Beneath a Steel Sky: https://wiki.scummvm.org/index.php?title=Beneath_a_Steel_Sky
- Blade Runner: https://wiki.scummvm.org/index.php?title=Blade_Runner
- The Castle of Dr. Brain (and sequels): https://wiki.scummvm.org/index.php?title=Castle_of_Dr._Brain
- Maniac Mansion / Day of the Tentacle: https://wiki.scummvm.org/index.php?title=Maniac_Mansion https://wiki.scummvm.org/index.php?title=Day_of_the_Tentacle
- The Dig: https://wiki.scummvm.org/index.php?title=The_Dig
- Full Throttle: https://wiki.scummvm.org/index.php?title=Full_Throttle
- Gabriel Knight (and sequels): https://wiki.scummvm.org/index.php?title=Gabriel_Knight
- Grim Fandango: https://wiki.scummvm.org/index.php?title=Grim_Fandango
- Indiana Jones and the Fate of Atlantis: https://wiki.scummvm.org/index.php?title=Indiana_Jones_and_t...
- Kings Quest (and sequels): https://wiki.scummvm.org/index.php?title=King%27s_Quest
- Leather Goddesses from Phobos (and sequel): https://wiki.scummvm.org/index.php?title=Leather_Goddesses_o...
- Leisure Suit Larry (and sequels): https://wiki.scummvm.org/index.php?title=Leisure_Suit_Larry
- The Longest Journey: https://wiki.scummvm.org/index.php?title=The_Longest_Journey
- Police Quest (and sequels): https://wiki.scummvm.org/index.php?title=Police_Quest
- Riven: The Sequel to Myst: https://wiki.scummvm.org/index.php?title=Riven:_The_Sequel_t...
- Sam and Max Hit the Road: https://wiki.scummvm.org/index.php?title=Sam_%26_Max_Hit_the...
- The Secret of Monkey Island (and sequels): https://wiki.scummvm.org/index.php?title=The_Secret_of_Monke...
- Space Quest: https://wiki.scummvm.org/index.php?title=Space_Quest