This wistful, witty and carefully crafted YA story will be enjoyed by anyone who remembers programming the Commodore 64 or being a kid who didn't fit in. THE IMPOSSIBLE FORTRESS is the name of an early version of a videogame designed and written by our eponymous hero, Billy Marvin. He has the idea of an Escher-style mountain of never ending steps, which the player must ascend, dodging troll guards, to find and rescue a princess, with three lives. The real world story as metaphor follows Billy and his two mates through a series of seemingly impossible and dangerous quests. Or is the game the metaphor? Decide for yourself.

The other lads, Alf and Clark, are as grossly adolescent and Playboy-model obsessed as any fourteen year old New Jersey lads were in 1987. With Billy's mom working all day, they hang out at his home, and devise a plot to acquire, then sell or rent out the girlie pics in Playboy. First they have to get the magazine, and to this end Billy starts spending time in the stationery store, where an awkward, plump girl called Mary Zelinsky is busy teaching herself to program her dad's Commodore 64. Finally, someone Billy can talk to about his game. They start to improve the code to enter a contest. But if Mary knew that the boys were hatching an elaborate robbery plot it would be game over.

Billy is tongue-tied in front of adults, because kids were. Kids never spoke back and never spoke up. Adults were right and telling them anything personal was too embarrassing. This leads to Billy clearly being exploited as free summer labour when he has other options. But this is the only way he can not let his mother down, and like many kids obsessed with computers, his school grades are poor.

I laughed aloud a few times, and I didn't want to stop until I'd finished. I could see troubles brewing, but young adult readers will take some genuine life lessons away from the story. Characters are provided with depth and background. I particularly enjoyed the ingenuity of the plotters, their determination to pursue their goals even after landing at the bottom again, and the way they can fall out but still be staunch friends. And I liked being reminded of Compuserve. This would make a great family or class discussion book. THE IMPOSSIBLE FORTRESS by Jason Rekulak will keep you entertained, whatever your age.