Exciting game for adults

Abalone Classic is one of my personal favorite games. However, I find an indication of the age and the season is not entirely correct. For a worthy opponent, the game can be extremely protracted and I know a few kids who are enthusiastic about the long term for this type of a game, or can really play it and not just their balls toward arbitrary and forth slide.
A good game with great entertainment value for adults who bring some time.