Design

In simple words, there is great scope in India on game development. Believe me, you can make a game and publish it totally no cost of money only need time and patience. Seriously try these software below:
Start learning Python programming language. Game engine: GO DOT ENGINE. It is completely free, simple, very easy and powerful. But must learn first GD script it is a python like scripting language use in GODOT. For 2d drawing use KRITA, FIREAPALCA, GIMP, and for vector art INKSCAPE. For 2d animation use DRAGONBONE
For 3d use BLENDER. For sound use AUDACITY
And now when you complete your game publish it in AMAZON APP STORE, ITCH.

Yes, there is aptitude test to get admission in this college in any of the branch.

You need to understand admission process of MIT institute of design:
The admission process is in two phases:
Phase 1 MITID-which Design Aptitude Test conducted at various centers across the country. Based on scores obtained from MITID-that, shortlisted candidates will be called for second phase. Phase 2 the second phase of the admission procedure will consist of studio tests followed by personal interviews at MITID campus in Pune. Check this out- https://www.shiksha.com/college/mit-institute-of-design-mitid-loni-kalbhor-pune-31430.