Oh, sleep and blissful dreams. Something that cannot be replicated.
Twilight Sparkle has studied sleep and practiced lucid dreaming, constantly jotting down the things she sees. Occasionally, there is a nightmare, but she escapes these with ease when she realizes she's dreaming. However, she tries not to get into those nightmares in the first place by trying not watch any scary movies after 7; instead she chooses to study and categorise all her notes from the previous day, and when she wakes up she takes the most important ones (decided in her dreams) and jots them down. After all, Twilight Sparkle was never going to waste her day, and she wasn't too keen on wasting her nights either.
But what if she finds herself in a dream too obscure to be a nightmare, and too busy to be able to work in? What if she finds herself in a video game that can only be escaped if completed? Will she make it? Or will she get a GAME OVER?