A bit like chess where you have to consider the consequences of the choices you make and be prepared to sacrifice some hard earned gains in order to improve your rate of progress. Helping other players pays off providing you keep your own needs in mind. Great mind exercise but discipline is needed if you want to avoid spending too much time. This game is deteriorating, little new on offer, becoming a cash cow for Playrix. Final straw is including grotty block puzzle games in the regatta.