Responsibilities of QA:

1. Quality Assurance Analysts must be able to find inconsistencies, glitches, or bugs in the game experience.
2. Other tasks involve documenting, reproducing, and reviewing these inconsistencies until they are deemed ok to ship.
3. Looking for spelling mistakes, graphical or audio glitches, and even copyright issues.
4. Should be a video games player.
   

Knowledge of the market is key.