Salaries and earnings of a game developer depends on a lot of criteria such as where do you work, what type of languages you know and your experience level.
Full Stack Developer
5-10 Lakh Per annum
Freelancer
218-500 Rs Per hour
Game Designer
5-7 Lakh Per annum
Game Tester
3-4 Lakh Per annum
Unity developer
6-9 Lakh Per annum
Also, In India you cannot expect very high salaries as a starter. Also, both gaming and game development has just started growing and is not a mature market now. Working in IT hub such as Bengaluru, you are going to get more good packages when compared to New Delhi or some other city.
So, we can say average salary of a game developer in India is around Rs 5 lakh Per annum. It goes as low as 3 Lakh Per annum and as high as 12 Lakh per annum.