Tomorrow, and Tomorrow, and Tomorrow is a story of love, friendship, possibilities, misunderstandings, and, of course, creating games. I found it enthralling. Their relationship echoes a game. The periods when they don't talk to each other been the equivalent of a game-character's death. Their getting back together, the 'return to last saved level' and recommencement of the game. In games, though, it's possible to press restart an infinite number of times; life isn't so convenient.
It's an intimate and nuanced depiction of a long-term friendship - one where the friends are as close and inseparable as lovers. The characters are fully developed, flesh and blood people, faults and all. Their arguments and misunderstandings explored from both sides.
I'm not a committed gamer, though I'm fond of Lara Croft and some of the Lego games, and it took this book to show me that games are really in essence another form of story-telling - a small child is lost at sea and must find its way home, an older child is in hospital undergoing treatment but at the same time slips into a fantasy world where there are different obstacles to overcome - and stories are ways of making sense of life.