ZDoom may be used and distributed free of charge. No profit may be made from the sale of it.
ZDoom was created by Randy Heit using id Software's and various others' sources.
ZDoom is, essentially, an advanced source port for Doom. However, it doesn't just support Doom/Doom II... it also has support for Hexen, Heretic, and Strife.
This new and easy to use tool will allow you to create new maps with great ease You can also add elements of detail to your levels, such as slopes, mirrors, 3-D bridges (sort of), colored lighting, deep-water, translucent glass, print messages, and many others.
ZDoom also has the ability to use free mouse-look. Other various options in the options menu allow for toggling the ability to jump, falling damage, allowing the silent BFG trick, crosshairs, and much more.
ZDoom supports the ability to use any graphics lumps in a wad as a texture or flat. You're also able to make your own custom enemies via DECORATE (without the use of DeHackEd).You are even able to make custom weapons (also without DeHackEd). Furthermore, ZDoom has full DeHackEd support, so you can customize already existing weapons (currently, "new" weapons must be added via KEYCONF).
Why would I want to use ZDoom instead of regular Doom?
Consider all these features that ZDoom has that are not found in the standard Doom originally released by id:
- It runs well under all modern versions of Windows, from Windows 95 to the new Windows Vista. If you have Linux, it works with that too.
- Can play all Doom engine games, including Ultimate Doom, Doom 2, Heretic, Hexen, and Strife.
- Supports all the editing features of Hexen. (ACS, hubs, new map format, etc.)
- Supports most of the BOOM editing features.
- Many more all-new editing features such as:
- Colored sector lighting.
- Custom monsters, weapons, and items.
- High resolution textures.
- Many, many extensions to ACS that were not present in Hexen.
- More music formats: Ogg Vorbis, MOD, XM, IT, S3M, MIDI, and MP3 as well as old-fashioned MUS all work.
- More sound formats: FLAC and WAVE can both be used for sound effects.
- More texture formats: PNG and JPEG are both useable for artwork.
- The vast majority of Doom limits are gone.
- An OPL softsynth is provided that can play the standard MUS music for an authentic "oldschool" flavor.
- Free look (look up/down).
- High resolutions.
- Translucency (regular and additive).
- A console.
- Full-featured joystick/gamepad support under Windows.
- Up to 8 player network games using UDP/IP, including team-based gameplay.
- Support for the Bloodbath announcer from the classic Monolith game Blood.
- Quake-style key bindings.
- Walk over/under monsters and other things.