oh wow, never hear this before... did you have any idea how unity or unreal work ?
renpy is nothing else than some shitty scripting pushed at the most easy limit possible. i mean its like :
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enter room
talk mom = hi honey !
player answer = hi mom !
scene end
scene end if clic somwhere else
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i not joking, renpy is literally this easy.. all you have to do is to put the art you make , and its even not hard at all as the soft have the most easy way to do that. ( renpy is the most easy engine to learn for game)
You know literally nothing about anything. For starters 3DS Max doesn't enter into game design, which makes your whole rant reek of ignorance, but moving on.
This is not 2001. You don't pointer and array your game from scratch. This is literally a matter of taking any freely available basemesh, tugging at a few facial features in zBrush and porting the whole rigged fucker directly into your engine of choice. You import animations, you import shaders, you plaster a few crappy featureless maps onto a UV already generated for you, import physics packages or take thirty minutes to turn your mesh's tits dynamic in Maya.
Ever wonder why these 3D games never go anywhere? (Same goes for Visual Novels) Because what I just mentioned is where people start thinking "Hey, this is easy!". They release their shit and suddenly they're faced with the colossal black hole of actual game design. That turning that bit of Akeytsu bullshit they call a cowgirl scene into an actual game is absurd amounts of work. That making a real time animation is no more or less work than a rendered one. That you need features, and features need assets, and unless your features are like everyone else's features, you will need to make them.
Then the whole thing starts crumbling down around them. Every 3D game so far has come out with this tech-demo garbage, and every single one of them is stuck in featureless-release limbo. They always will be, because 3D game creation is stupid amounts of work, and the gimps that dump their quick asset-imports into this community never become aware of it until silly folk like you have already fallen for it hooklinesinker.