Users can create their own modifications by writing plugin code. TerrariaPatcher allows customization of game mechanics & behavior with its included patches and plugins.tAPI allows creation, management and playing of multiple mods at once.Terraria Custom Content Loader allows using custom sprites, fonts, music, and sounds, and permits using multiple Texture Packs at the same time.Detox is a client modification that allows customization via the use of plugins.tConfig is a content creation tool and content loader.The latest version of tModLoader is 0.11.8.5 and it works with Terraria 1.3.5.3, while support for Terraria 1.4 is in progress. It is officially endorsed by Re-Logic and is available through Steam. tModLoader is a framework and client for creating and loading complex Terraria modifications.