When not selected it is assumed that the end user will have the font already installed on their machine. When selected the TTF is included in the output of the build. This setting controls the packaging of the font when used with Dynamic font property. Import Settings specific to dynamic fonts Property: Setting this mode to Dynamic causes Unity to embed the font data itself and render font glyphs at runtime (see below). The character set of the font to import into the font texture The font rendering mode, which tells Unity how to apply smoothing to the glyphs. The size of the font, based on the sizes set in any word processor. To change the Size of the font, highlight it in the Project View and you have a number of options in the Import Settings in the Inspector. Supported Font formats are TrueType Fonts (.ttf files) and OpenType Fonts (.otf files). To add a font to your project you need to place the font file in your Assets folder. Fonts can be created or imported for use in either the GUI Text or the Text Mesh Components.