What games have the largest space for players to discover new strategies and new paths to victory? I dislike where games have an obvious, clear path to victory and there is no discovery in subsequent plays.
Agricola would probably fit this bill with the starting cards where you have to play a new way that you did previously and try to discover a new strategy. I'm sure other games do this better. But it does feel like most games just have a clear path or they present different paths to victory but it becomes clear that there is a clear dominant strategy.
Hansa T would probably also fit, Skymines/Mombasa, Ark nova???