Game design

If you are passionate thats the only criteria for getting job as a QA tester. You can look for the same in the below mentioned portals:
> Gamasutra.com
> AnimationXpess.com
> CG Channel.com
> 3D Total
and others

Its more passion driven as such no specific qualification is required for being a QA video game tester. It requires good observation and eye for details.

Game designing is a creative activity where you work on your idea and develop game concepts and high level requirements of game. It then lead to technical design of game. Once technical design is over developers develop( write software code) game. Development also include game software testing. This is a niche software applications development area and those who join this field do not want to do anything. It is a creative satisfying career.

Dear Magesh,
To study game designing in Chennai, you can refer to the below link:
https://animation.shiksha.com/game-development-courses-in-chennai-categorypage-12-94-1-0-0-64-123-2-0-none-1-0

Game designing is creating look and feel of the game and game development relates to the coding. If you have flair for sketching or drawing you can opt for game designing on the other hand if you are comfortable with writing codes you may choose game development.

Gaming Designing requires creative skill and there are institutes offering specialized game designing course. You can locate such institutes in your city here https://animation.shiksha.com.

You can connect with the ones mentioned below:
> School of Media Design
> DSK
> AIGA

There is good scope in game designing but why specifically game designing as gaming as various sector and game design is just one part of the puzzle. As a starter you can expect anywhere between 7k to 15k per month.

Game designing is a creative activity where you work on your idea and develop game concepts and high level requirements of game. It then lead to technical design of game. Once technical design is over developers develop( write software code) game. Development also include game software testing.