The Sands of Time - 5/5 - The original, less complicated of the 3 which is usually how i like my games.
Warrior Within - 4/5 - Went down a different path and tried some new things, more complex darker story and battle modes. Lacked the charm of the original. Hardest of the 3 - largely due to the confusing back tracking.
The Two Thrones - 4.5/5 - Returned to the environment of Sands of Time, but still keeping the new features that worked from Warrior Within.
Gameplay 5/5
Graphics 4/5
Sound 4.5/5
Difficulty 4.5/5
Originality 5/5