I think gaming industry is the next tech boom in India. Indian gaming market is still smaller compared to USA mostly because online gaming awareness is limited to urban areas. Rural areas still don't have enough resources that will allow its internet users to spend time on the internet for games.
But things are changing now. India now has Indian Games Industry and Trade Association (iGITA) which would help Gaming companies to get a strong position in the global gaming development market. Zapak being the leader in Indian gaming industry, other players follow the trend.