Dark Theme is a setting that you can toggle to change the background color of your Agar.io game. Instead of having the default white grid, the grid changes into a black grid. And it can be better for your eyes! (Use for playing at night). You can also use it to reveal the Spy skin.
- Despite several rumors, the infamous "Spy" skin does not change it's color to the Dark theme.
- Some skins will be more difficult to see while using the Dark Theme.