How did you start the career as a Game Dev?

I’ve just completed my schooling and have written engineering entrance. The results are ok so that I can get admission into a ‘B’ grade collage. I’m thinking of taking CSE (Computer Science And Engineering). I want to become a Game Developer. What did you all did to become game developer?

I already learnt programming basics in C, C++, Java, C# and VB.Net. What should I do inorder to become a GameDev?