To play craps, you need nothing more than two dice (and players, of course). A dealer collects bets on the predicted outcomes of a single toss or number of rolls, then casts both dice in one go. Other than knowing the faces of a die, one needs no other skill to play craps.
India is the country that has the world's second largest population. This means that it is a place that online casino operators are very keen to get involved in. The potential size of the market means that there are huge rewards for anyone who is able to set up a popular online casino in India.