This year too Global Game Jam provides diversifiers to spice up your games and/or make them more accesible.
What are they and how do they work?
Diversifiers are optional constraints you can add to your game, alongside the main theme, to make your jam even more interesting and challenging.
While creating your game you can choose as many as you like to incorporate inside your gameplay or art, but remember you can only select up to four while uploading on the Global Game Jam site.
You can check the whole list here.