Bachelors

So you must have also started exploring the world of game development. Cool, isn't it? How can game developers make these awesome things? How can they sew a whole new virtual world with the power of programming, AI, graphics and what not? But after quite searching, you must have exhausted and thought, Hi why not join a college for game programming in India? Stop right there. Keep one thing in mind, you don't need college for learning how to create games. As far as I have been into this, it involves the use of logic and a better understanding of programming language (especially C+since it is widely used in everything). Rather go for learning computer science. It is the discipline which is important, not the game programming college. Moreover, you will be able to combine all other areas of computer Science into programming games. Whereas in game programming college, they will only teach you a specific area of programming, which is quite wrong and won't be helpful in long run. The game developers I know are mostly self-learners and really implemented what they thought. And mostly, they love what they do. Refer this link:
https://www.shiksha.com/it-software/game-design/colleges/colleges-Delhi-ncr

I can't tell you much about diplomas as I am a B.Tech myself. But the main difference between a post graduate Diploma and an advanced Diploma is that a post graduate Diploma as the name suggests is a PG Diploma, whereas advance Diploma is same as the regular Diploma only that its a 3- year degree course as compared to a 2-year regular diploma. Masters as well as PGD, both are beneficial after graduation in mechanical engineering. But the difference between a Postgraduate Certificate, a Postgraduate Diploma and a Masters M.A. Or M.Sc. Or MS) is in the amount of credits the course contains. A general Masters degree contains a greater number of credits (usually 1.5 times) than a post graduate Diploma. More number of credits enables one to achieve better results with increased probability of scoring. So, it would be a wise decision to earn more number of credits and increase job and career prospects in a 2- year time which is same for both Masters and PGD. That's all I know. Hope it helps.

*Should have all school- and college-level certificates from an authorised institution. *Should have completed a joint entrance examination and secured good academic scores. *Should take up the Feststellungsprfung* exam for applying at any German institution. Should be able to produce documents stating successful completion of the Feststellungsprfung examination. [*Feststellungsprfung this is an examination conducted by universities in Germany that assesses your proficiency not only in subjects important to your chosen degree programme but also in German language. Feststellungsprfung, which comprises a written and an oral section, is a qualification to help apply for a Bachelors degree.