I've worked on several. You haven't heard of them because none of them shipped due to issues with commercial engines (in particular Unreal Engine 4).
They are very difficult to use if the game play semantics are complicated and require lots of interaction with world state or world geometry. If you're making a common FPS, they are great.
They are very difficult to use if the game play semantics are complicated and require lots of interaction with world state or world geometry. If you're making a common FPS, they are great.