Pocket Gamer: GridBlock Review
Pocket Gamer: Before we had such things as iPhones and iPads, portable entertainment was a little more rudimentary.
A particular favourite with children of the '70s and '80s was the classic ball-bearing puzzle, where you'd have to get all of the small metal spheres into a series of holes. It was simple but devastatingly effective at eliminating boredom on those long trips to visit elderly relatives.
