vg_hub is where you can find game related promptaires.
VGs
Video games like Runescape, ARC Raiders or even Starcraft have different items and missions or quests. These promptaires are meant to get any kind of information available by the API.
Hub
A hub being a central part of the activity of different video games. This is how you’d find high scores, items, quests or even some tips/strategies from the wiki.