The movie was a major success, becoming the best-selling film of all time. The story began in early 1998 with a young friend who wanted to play a game called "caveman" on the high school team. It had been around for over three years and he'd just played it as a family fun game. In this new world, his friends could have great fun together.

But like most games, caving can be hard. If you want to get good at it, you need