Suppose you got an OTP chip of 500 INR, now you can play roulette or any other game and if you win you can cash out 500 INR. OTP chips are chips cannot be cashed out but can be used to play a casino game and if you win the game you get back the same amount of money which was designated with OTP chips. In fact, the revenue earned is slightly lower than the income earned by the government from mining royalty, which was Rs 342 crore in 2016-17. The total earnings of Rs 334 crore received by the government from the casinos make it a powerful industry for all reasons. In addition to this, in April 2018, Goa government has hiked the license fee of casino by 45%.
Goa has seen a 56 percent rise in the income from casinos with the state receiving revenue of Rs 334 crore in 2016-17. The first ever casino in Goa was an offshore one in the Mandovi River, built during the year 1999. Gambling falls under state government legislation and also contributes a huge chunk of money to the state government revenue. Goa is one of the few states (apart from Sikkim, Daman, and Diu) in India where Gambling is legal.