Game Developer

In India, there are many top game design institutions and colleges offers several game design courses from certificate level to Masters level. Some most popular courses are listed below:
Certificate & Diploma Courses:
Certificate in Gaming
Certificate course in Game Art & Design
Diploma in Production Gaming
Diploma in Game Design and Integration
Diploma in Animation, Gaming and Special Effect
Diploma in Game Design (DGD)
Diploma in Game Development
Diploma in Game Programming
Advanced Diploma in Game Art & 3D Game Content Creation
Advance Diploma in Game Programming
Advance Diploma in Game Design and Development Application
Bachelor Courses:
B.Sc. in Gaming
Bachelors in Media Animation & Design (BMAD)
B.Sc. Animation & Gaming
Bachelor of Science in Animation Game Design and Development
Bachelor of Technology (B. Tech) Computer Science and Game Development
Bachelor of Arts (BA) in Animation & Computer Graphics
Bachelor of Arts (BA) in Digital Filmmaking & Animation
Bachelor of Science (B.Sc) in Graphics, Animation & Gaming
Master Courses:
Integrated M.Sc. in Multimedia & Animation with Game Art & Design
M.Sc. in Gaming
Master of Science (M.Sc) in Game Design and Development
Master of Science (M.Sc) in Multimedia and Animation
Educational Requirements
For admissions in diploma courses, you must have cleared 10+2 or equivalent exam with any stream from any recognized board. Some colleges prefer minimum 60% marks criteria for providing admissions in diploma courses. If you are seeking for admission in certificate courses, you should have passed 10th standard from any recognized board.
Students who have successfully completed higher secondary/ 12th class from any recognized board are eligible to apply for undergraduate courses. For admission in postgraduate courses, candidates must have a Bachelors degree in the related discipline or branch.
Admission
For admission in game design or gaming courses, firstly you have to meet the eligibility criteria prescribed by the institution or college where you are seeking for admission. Some colleges offer admission to students on the basis of merit list of qualifying exam.
Various colleges give admission on the basis of entrance examination followed by group discussion and personal interviews.

A game developer designs the software programs for computer games. Their job tasks include developing gaming programs and networks for third-party use and other related tasks.
*Firstly, you need to have a Bachelor's degrees, such as the Bachelor of Science (BS) in Computer Science with a computer game design concentration, Bachelor of Fine Arts in Design and Technology with a focus on game design or The programs that focus on the construction and design of computer games, and the increasing use of games in different aspects of society.
*Complete an internship because internships allow students to obtain experience working in the field of game engineering and interact with other game engineers, they make it easier to find employment after graduation.
*Then, you need to work on a core development team for games, ensure games are compatible with distribution channels, and develop monetization aspects of games.
*After working as a gaming developer, you may go on to positions in game designing. You can use the skills you've acquired through entry-level work to handle more complex projects and systems for consumer use.
Salary prospects :
In the beginning, you may get around 2-3 lakhs per annum and it may increase as you gain more experience.

First of all, I am glad that you are very clear about what exactly you want to do and it doesn't matter if you got 60% marks in class 12th. I don't know much about Institutes offering game development courses, so I am skipping any suggestions regarding which Institutes to join. But, here is what I got to know while trying my hands in game development as a hobby. Game development is not just programming or just character designing or level designing, you have to be relatively good at everything, if you truly want to make production level game. And, thankfully there are lots of tools and resources for game development and I would say it's quite easy nowadays to jump into game development. I tried game development in JavaScript thanks to great open source gaming libraries and in Unity 3D. There are lot of tutorials and documentation floating around on internet. And, if you are relatively comfortable with basic programming, then you can easily become well versed in either one of the game development environment. Just choose which technology stack you want to use for game development. I would suggest you to use Unity 3d as you can port your games to many platform like from android to IOS to Web Browsers.
So, download Unity 3d, or favorite JavaScript gaming library and if you want to go native way, then download Android SDK or Xcode for iPhone, so basically a development environment.
Then join one of many Udemy tutorials in the development environment you chose and start coding and creating. Don't give up if things seems complicated at some time because they are. At the end of the course, you will have a very good idea about how to develop games and once you get your basic game development concepts clear, then it will be relatively easy for you to transition from one platform to another.
And, talking about making money through games, there are many ways to monetize your game, you can try Ads in your game or follow In App Purchase strategy or outright sell it on app store for the price you think it's worth or work for game development studio or as a freelancer.