Godot has a terminal only mode

Sometimes game design makes it physically impossible. Any foot based rhythm game (DDR, PIU. DRS) is not playable by wheelchair bound people. Most good vr games will give motion sickness to people. Those people can enjoy different games that are designed with them in mind

Steam itself has bundled libs for apps to use (steam linux runtime)

I always thought they seemed shady

Fortnite is like roblox now, it has tons of user generated games inside of it (created using the fornite edition of unreal editor) and multiple epic created games