9. User Lab Researcher
"Ugh, lucky! My best mate got to go visit Rad Dude Studios to try out a prototype build of the new Star Curd: Spread Wars, and they even paid him! But he said he had to sign a non-disclosure agreement, so he can't tell me if Marmalord dies in the Toastron..."
If you said yes, why are you answering an internet article's rhetorical questions out loud like a maniac... and secondly, who the hell is your mate?!
User research labs are run by most large publishers as a way to both gauge real-world interest in their games by hiring regular gaming enthusiasts to try out games currently in development. Often done at significant milestones of a game's development, the user research lab might have in up to fifty different individuals to play the game behind closed doors, and give feedback based on their experiences.
These people are compensated, obviously, but the labs also have to be managed, and that's by researchers who collate and present the data internally to the designers who may decide to change certain mechanics ad-hoc.
That means this entry could either refer to the researchers themselves, or the researchees. What? Researchees is a word.