Probably easier to implement in the NES case too: toggling the screen background color rapidly was a common trick used by NES developers to represent large expl

Probably easier to implement in the NES case too: toggling the screen background color rapidly was a common trick used by NES developers to represent large explosions and the like. That would be easy to sniff for and blur out with few detrimental effects. Doing the same with today's visually intense games, like Rez and Tetris Effect, would be more difficult. The potentially harmful visual effects are more subtle than simply rapidly flashing the entire screen background, would require heavy processing to scan for, and if you filtered them you risk compromising the visuals that some people purchased the game for. Best to just warn them so photosensitive people know what they're getting into.