DFHack is an add-on for Dwarf Fortress that allows players to significantly extend the game. This program enables mods and tools that give the player more control over the game, reduce the impact of game bugs, and provide alternatives to frustrating gameplay aspects. The program provides a wide variety of tools, including bugfixes, automation agents, design blueprints, modding building blocks, and more. It also seamlessly integrates with third-party tools downloaded from Steam Workshop or the forums. DFHack's mission is to expand the bounds of what is possible in Dwarf Fortress and make the game more fun. The online Quickstart Guide and in-game command, quickstart-guide, will help users get up to speed with how to use DFHack. For feature requests or problem reports, users can open an Issue at the DFHack Team's GitHub page. DFHack installs directly into the Dwarf Fortress directory, so be sure to install it to the same Steam library and drive as Dwarf Fortress.