BCA

Hi Sahira,
Please know that there is no BCA and MCA degree in Canada. You can either study BS Computer Science and MS Computer Science or related fields such as Information Technology, Software Engineering, Computer Networks etc.
For Bachelor degree you must give the TOEFL and SAT. SAT is optional and depends on the university. Admissions are done on the basis of your 10+2 grades and you must have high grades. Other requirements include your high school certificates, letters of recommendation from your teachers, statement of purpose, CV, passport photo, proof of finance and application fee. I will advice you to check the individual university websites for the admission requirements and deadlines. Hope this helps.

Hi Vaishali,
You may do game design or development to go further.
I'd be happy to understand your current stage of progress including academics, courses, hobbies and other interests to help you understand what in you can lead to game design and also what aspect of game design can suit you better.
In most cases a broader learning like a combination of graphics, multimedia, web design, VFX, 2D and 3D animation, can lead to a better preparation towards launching oneself into a gaming career. A specialization in game design is a useful add-on afterwards. Just to state the facts, none of the famous game designers in the world today have done anything remotely linked to game design. That said, do not take it as a bar to entry, but to elucidate the fact that a broad learning is always necessary to get into a challenging career such as game design.
Now let's go into the nitty gritty on game design.
To become a game designer, you must get a good knowledge of 3D software as well as pre-production. Games environment is created in 3DSMax and Character animations in Maya, only the models are made with less polygons and more textures. So take a program that teaches you these. It won't matter whether the program is called game design program or not. Rest, to become a level designer you must have a passion for game design. Also you must have passion for playing all kinds of games including card games, dice games, sports etc.
The 3rd option is Game Art (it's different from game designer), where you design the game itself, i.e. what happens on each level, and how things go about as well as the base story of the game. It is a stage that you reach due to your vast knowledge and passion and even exceptional technical skills cannot help you reach. This is usually the story designer.
May I ask, have you ever designed a game?
Finally, to do game programming you would require knowledge of programming in which usually a B.Tech/MCA would help. Typically game programmers usually would be knowing C#, Java, besides at least a game engine.
Here is a complete snapshot of Gaming Industry by me on Shiksha website:
https://www.shiksha.com/from-gaming-to-game-designing-article-5827-1.
Wish you the best for your career. If you like this answer you may select it as best answer.

Hi Masum,
You can surely go for design. Design is a field that is age old and has been evolving every year like science.
The world has changed a lot and a lot of new and wonderful careers in design have come up. Sometimes student artists are too much enamored by fine arts preventing them to look objectively at design. Again like science it pays to be at the cutting edge.
Similarly in design the cutting edge areas are UID/ UXD, 3D Printing, Immersive Technology, Augmented Reality, 3D Projection etc., besides of course game design and animation. Of course at the top of the pile lies Concept Designing (usually reserved for writers and visionaries), these people are required by event companies, animation studios, VFX Studios, and of course game studios. At this stage, you may want to understand the creative world and the careers it offers. Interiors, textile as well as web design rely on the same skills, your layout skills and color sense.
Journalism also is at this level and relies on your language skills and knowledge of history and current affairs. A little higher perches graphic design, fashion design, jewelry design, acting, and fine arts which rely on one of your artistic skills, sketching and imagination. At a similar level perches VFX as well as motion graphics which rely on one of your artistic skills, cinematographic skills and imagination. Then come careers like animation, film making, and game design which rely on multiple talents like your authority over sketching, acting, direction, voice, sound, writing, storytelling and problem solving skills etc. Any extra skill can be used in this. So it turns out to be one of the most challenging as well as satisfying careers. Sure not recommended for the weak hearted.
Do remember that digital design careers (e.g. web design, graphics, UI design, animation, VFX, multimedia) give better profits since they can be delivered anywhere in the world and hence may earn in dollars, resulting in better rewards for designers.
If you like this answer you may select it as best answer or press like.