My forever favorite game will always be Terraria, Pokemon Black/Zapphire and Yoshi Story because they been part of my life since i was an embryo... However currently my favorite thing in the world is YuGiOh so i need to say that my favorite video game is YGO: Forbidden Memories the way it scratches my autism.
Also i need to give honorific mentions to Undertale and Stardew Valley because without them i wouldnt be a full person.