Machinimas

Presumably machinimas that are recorded in video games are allowed to be submitted to IMDb, if it isn't just gameplay. In another post, an IMDb staff member said that gameplay couldn't be added, unless it had "[a] voiceover or 'new' content" added to it. If that's the case, then a machinima that has a story, new music and some form of editing would be allowed, one could assume. How about scenarios, though? What I mean, is a short video which was recorded in a video game, but might have a specific concept for the video, which isn't something that would occur if one was playing the game normally. Or, it could be recorded in a game that doesn't have a specific way to play, like simulation games, where 'gameplay' isn't like an RPG, where you have a story and stuff.

An example of what I mean (I should warn you this clip I've linked to does contain nudity): https://www.youtube.com/watch?v=LBpkC3a9PL8

Additionally, I'd like to know what is the minimum requirement for new content being added to gameplay to make a video eligible to be listed on IMDb.

Note: Feel free to delete the link if it's not appropriate, but I thought it could be useful illustrating my point.