>>715851632
I'd say they became too difficult to make.
The little they had is now standard in many games.

>old stealth game
Low graphics, limited movement, enemies move in incredibly predictable patterns, cone of vision, visually distinct floor tile for stealth
Don't worry about sound and light reflection, your elite ninja is taking care of that but we can't make it justice.
It's actually super dark but you can see clearly because of your super ninja-senses or cyber-sight.
The camera are limited cause that's how they are IRL.

>modern stealth game
Absolute fidelity graphics with secondary light reflections and sound reverberation.
Ability to move in all 3 dimensions with multiple movement speed & stances.
World populated by dozen number of NPC that can react to suspicious or violent actions.
All camera have AI that instantly recognize movement while looking 360° around.

But just pretend you are hiding in these conveniently supersized grass,
Also pretend you are invisible on top of buildings because no one's eye is attracted by strange figure moving above them.
Also security camera had a serious budget cut, so did guard recruitment standard
Also bystander will not mind you being a visibly dangerous person unless you attack
Also it's very luminous with indestructible light everywhere because if it was dark we can't show of the graphics