While gambling is outlawed in India, low-cost internet data and affordable smartphones has meant online gaming has recently exploded with close to half a billion users. Real Money Gaming has come to dominate the mobile gaming space with these applications offering sports bets on anything from the Indian Premier League to poker.

This one-off special examines the darker side of this burgeoning activity. Travel to Tamil Nadu to find out how the state is drafting legislation after a spate of gambling linked suicides in recent years. Also, uncover the Indian government's challenges of regulating this ever-expanding field.

With exclusive insider access and personal testimonies, delve into the industry that is taking the world's most populous country by storm. 

Part of the award-winning series Undercover Asia.