She provides an endless series of games (7)
I believe the answer is:
olympia
'she' is the definition.
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for olympia that I've seen before include "Chief sanctuary of Zeus" , "London venue - Greek Games site" , "high heavenly home" , "Place of ancient Greek games" , "Greek plain known for games" .)