Well, As you know, a curious hobbyist game developer like to make games like big games that pro game development companies make, so he probably wants to find out what engine or language did they used. Unfortunately even if you searched hard you will notice you are not allowed to ask this type of questions becasue you're probably getting no answer
So, Why Big Game Development Companies don't ever say what engines, or languages or resources , or etc.. idi they use?
In my mind they are 3 possible reasons:
1- They are afraid of competition from indie developers or lose popularity of their game
2- They have their own-made engine & They don't wanna share
3- They don't use an engine at all
It's really a head-scratching topic
If you know anything let's discuss it peacefully!