GZDoom is a source port for the modern era, supporting current hardware and operating systems and sporting a vast array of user options. Make Doom your own again!

In addition to Doom, GZDoom supports Heretic, Hexen, Strife, Chex Quest, and fan-created games like Harmony and Hacx. Meet the entire idTech 1 family!

Experience mind-bending user-created mods, made possible by ZDoom's advanced mapping features and the new ZScript language. Or make a mod of your own!

• Can play all Doom engine games, including Ultimate Doom, Doom II, Heretic, Hexen, Strife, and more
• Supports all the editing features of Hexen. (ACS, hubs, new map format, etc.)
• Supports most of the Boom editing features
• Features complete translations of Doom, Heretic, Hexen, Strife and other games into over ten different languages with Unicode support for Latin, Cyrillic, and Hangul so far
• All Doom limits are gone
• Several softsynths for MUS and MIDI playback, including an OPL softsynth for an authentic “oldschool” flavor
• High resolutions
• Quake-style console and key bindings
• Crosshairs
• Free look (look up/down)
• Jumping, crouching, swimming, and flying
• Up to 8 player network games using UDP/IP, including team-based gameplay
• Support for the Bloodbath announcer from the classic Monolith game Blood
• Walk over/under monsters and other things

Commercial data files are required to run the supported games. For more info about all supported games and their data files, see: Help -> List of supported games.

With Flatpak, all file-access is restricted to ~/.var/app/org.zdoom.GZDoom/.config/gzdoom for privacy reasons. You'll have to manually place your IWADs and PWADS there, or you should use an application like Flatseal to give GZDoom additional permissions.