My Brain Is A Stick Of Butter is a 16 page solo rpg about experiencing ADHD.
Gameplay uses a d6 and a deck of cards. You try to complete tasks in several categories over a series of days, with the catch that the task your brain serves up to you isn't always the one that your environment wants you to do at the moment, and it costs energy to shift your focus. On top of that, once you've focused on the task you want to work on, you're not guaranteed to make progress. You might get blocked, frustrated, revert your work, or forget what you were doing.
Layout-wise, the game is also extremely strong. The intro, outro, and example are all written in a fairly standard formaton standard left-justified pages, but the actual core of the game text is written onto small note-card-ish blocks and jumbled around on the page along with graphs and graphics. It's still easy to read, but everything is tilted at slight angles and there's a distinct feeling of things flowing together and feeling out of control.
Overall, I think I'd recommend this to everyone. I felt like I came out of the game with a radically different understanding of what experiencing ADHD feels like, and it's definitely not every game that redefines my perception like that. Buy a copy if you can, or check out a community copy otherwise.