... maybe you should look here:
Top 10 CRPGs of all time
My personal top 10:
1) Planescape Torment
this one is like a novel with wonderful characters
2) Wizardry 6, 7, 8
the best turn based combat party rpg triology ever
3) Albion
perfect blend of Wizardry and Ultima - superb story
4) Ultima 7 - all parts & Ultima Underworld 1+2
the Grandfather of all living worlds
5) Might & Magic 2-7
great turn based series, with many riddles and puzzles
6) Fallout 1+2
this game is simply fun - great style
7) Gothic 1, 2 NOTR
8) Baldur's Gate 2 + Throne of Baal
Re-Invention of the good old "Gold Box Games"
9) Jagged Alliance 1, Deadly Games, 2 + Deidranna Lives / Urban Chaos / Wildfire
the very best strategy combat rpg
10) System Shock 1+2
the best rpg with all other humans dead
Honorable Mentions:
Betrayal at Krondor, Genforge1-3, Avernum(=Exile)1-4, Vampire - the Masquerade, NWN 1+2, Nordland triology, Evil Islands, Daggerfall, KOTOR 1, Dungeon Master 1+2, Ambermoon, Amberstar, Icewind Dale, Deus Ex, Bards Tale 2, Darklands, Wasteland …
I have to stop …