DarkTO is a Chrome add-on developed by kortex152 that brings a dark theme to the popular online game, Tanki Online. This add-on not only changes the interface of the game to a sleek and stylish dark theme, but it also adds a timer to the game page. With DarkTO, players can customize the interface colors and assign hotkeys for the timer in a special menu. The menu can be easily accessed by clicking the button located at the bottom left of the screen or by using the pre-configured hotkeys ("ctrl + capslock" by default). DarkTO offers a visually pleasing and functional enhancement to the Tanki Online gaming experience.