Two of the simplest variants of flat-screen displays, relatively speaking, are LCD screens and LED screens ... then one of these two display types should provide what you're looking for.

TL;DR: Photonics unveiled the Jumbo 162, a 767-inch LED display with 4K resolution and a 3840Hz refresh rate... a gamer's dream display. Imagine Mario Kart on this thing! Belgian LED display ...

All of this is just LED screens displaying backgrounds pre-made in a video game engine. Compare that with this fight scene from "Avengers: Endgame." Where actors jumped around in a sea of green ...