The First 50 Commercial 3rd Person Adventure Games You Should Play, In Play Order

The Monkey Island Series (notably #1 and #2)
Grim Fandango
Full Throttle
The Broken Sword Series (notably #1)
The Gabriel Knight Series (notably #1 and #2)
The Day of the Tentacle
Indianna Jones and the Fate of Atlantis
Sam and Max Hit the Road
The Longest Journey
The Dig
Beneath a Steel Sky
Loom
Maniac Mansion
King's Quest Series (notably #6)
Quest for Glory Series (notably #2 and #4)
The Kyrandia Series (Notably #1 and #3)
The Space Quest Series (Notably #3 and #5)
Simon the Sorceror Series (Notably #1)
Runaway 1 - 2 (notably #1)
Dreamfall : The Longest Journey
Discworld 1 - 3
Syberia Series 1 - 2 (notably #1)
Indigo Prophecy
Sanitarium
Star Trek 25th Anniversary
Star Trek Judgment Rites
Gobliins 2
Flight of the Amazon Queen
Gold Rush!
The Police Quest Series (notably #1 and #2)

The First 50 Independent Adventure Games You Should Play, In Play Order

Pleurghburg : Dark Ages
The Trilby Quadrilogy 1 - 4
Apprentice 1 and 2
The Blackwell Series 1 and 2
A Tale of Two Kingdoms
Prodigal
The Ben Jordan Series
No Action Jackson
The Larry Vales Series
Frasse & Pease Of Kejeck
What Makes You Tick?
Just Another Point n Click Adventure
Cirque Du Zale
Quest for Glory 4 1/2
Emily Enough : Imprisoned
Permanent Daylight
The Shivah
Hugo's House of Horror

The First 50 Text Adventure Games You Should Play, In Play Order