In many countries, gambling has gained status as a socially accepted form of entertainment. Studies of how and to what extent young people are influenced by changes in gambling availability are relatively inconclusive, and knowledge of why youth gambling behaviours increase or decrease under changing conditions is sparse. This study addressed this situation by examining qualitatively how young people experience and respond to changes in gambling opportunities. The research presented in the article is part of a large longitudinal study of gambling behaviours among Danish adolescents. Data were collected over a period of 3 years with three waves of interviews with a 10‐ to12‐month frequency. A number of issues were identified and these were integrated into four overarching analytical themes: legislation, conditions of entry, proximity and technological innovations. Implications for further research and policy are considered.