She provides an endless series of games (7)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

Olympia was home to the original Olympic Games – not sure if there’s more to this clue edit thanks to KVa in the comments: “She” is the definition – Olympia is a female name. OLYMPIA-[d]: end letter removed from “series of games”. An Olympiad can be an international contest in e.g. chess, involving a series of games