Yep, and Kismet before that. The usual consumers are designers and tech artists, at least in the teams I was on. Previous to that we also heavily leveraged Lua

Yep, and Kismet before that. The usual consumers are designers and tech artists, at least in the teams I was on. Previous to that we also heavily leveraged Lua coroutines as a form of literate programming/game "script". Since the coroutines would execute in a linear manner(with yield() where it handed execution back to the engine) it was really powerful for scripted sequences. Another interesting area is industrial/PLC programming. The parallels between what we did in gamedev and ladder programming was striking. Visual state representation, online edit-deploy-debug. I'm fairly confident you could give a designer a copy of a ladder editor connected to a game engine and they would have no problem scripting out a sequence.