Crux: A Climbing Game is an iPhone game developed by Benjamin Dressler. It is a free game in the Games category. In Crux, players must carefully plan their route and execute flawless moves to reach the top. By swiping on either side of the screen, players can move their hands or feet to a new hold. However, each hold has a limited amount of time that players can hang on.

The game offers a variety of challenges that players can master. It has been recognized for its excellence, being named the AppStore 'Game of the Day' on November 13, 2020, and PocketGamer's #1 'Game of the Week' on September 10, 2020. Crux also allows players to design their own routes and share them with other climbers.

According to Riley McLeod from Kotaku, Crux provides some of the mental joys of climbing, even in times when physical and social activities are limited. With its engaging gameplay and positive reviews, Crux: A Climbing Game offers an enjoyable experience for climbing enthusiasts and gamers alike.