Dear Rohit,

Hello.

Game Designing is an upcoming field. Many of the students  nowadays are opting this as there  career option instead of many regular career options are available. Game design is a new field of designing in which the game designer's responsibility is to create an attractive game . It is both art and science. It is the art of envisioning the story line, content and rules of a game; while it is the science of examining the psychology of the player and his relationship with the game. Now  regarding  the pathway of becoming a game designer you can either opt PCM with multimedia and web technology or you can also opt for arts stream with Psychology, Multimedia and web technology/ graphic design, Information Practices, DTP CAD and Multimedia and Entrepreneurship/ Business Studies.These combinations are suggested as they will give you the grassroot level of knowledge about game designing. Entrepreneurship/ business studies options are suggested as you can after gaining experience can develop your own game and can open a gaming zone where different age groups persons can play the games according to there interest. If you want to B.Des (Bachelor's of Designing)from IIT- Mumbai in which game designing is offered as an elective then you have to give JEE (Main and Advanced) or else you can give various private exams of various institutes like DSK Supinfocom International Campus Pune (best insti ) ,Asian Institute of Gaming and Animation Bengaluru, ARENA etc. For the entrances you have to visit the website of these institutes. As per my knowledge there is first an online test of the institute and then there is a studio test . For preparing you have to take coaching for designing entrance exams. After doing this course start doing internships , create a group of similar thinking persons and open a small company and establish yourself. Keep your CV and knowledge updated. 

I hope this information is helpful for you.

thanks

dr manasvee