It’s interesting how such a simple game structure can continue to reveal such an intricate strategy space.When you first play Flow, one of the first things you realize about strategy is that you are more determined on the outside. The flows that go out to the walls are easier to find. If you’re on an edge three-close to a corner, you must enter.And as you play with hexes, you find they are even easier because they have more edges. You start to realise that walls are pretty critical pieces of strategy. But when we hit Bridges, suddenly there is a whole new set of strategies that arise. If you’re next to a bridge, you must go through. The topology is no longer planar, and your mind has to adapt.Now, throughout this all, they’re giving you tons of crazy formations and arrangements, but they all point to the importance of walls in the strategy. The courtyard levels drill this in.And then warps take away the walls on the side. Suddenly you’re in some strange toroidal world where you can be, at times, unbounded. And you have to re-evaluate the simple things, the endpoints as wall generators, the flows as walls, you have to find the boundaries not in physical walls but in the arrangements. Once you beat the 7x7 Boundless, you know you’ve really learned some deep patterns in the game strategy.I did not expect, when I started playing this game that I would find so much interest in the strategy. But it continues to be so rich and interesting the more the variations extend. This is a game for the ages.