About:
Vavoom is a source port based on sources of Doom, Heretic, Hexen and a little bit from Quake. Supported platforms are DOS, Windows and Linux.

Requirements:
To play Vavoom you need main wad file from one of the following games:

• Doom shareware
• Doom registered
• Ultimate Doom
• Doom II: Hell on Earth
• Doom II: TNT Evolution
• Doom II: The Plutonia experiment
• Heretic shareware
• Heretic registered
• Hexen
• Strife

If you have multiple IWADs, you can use command line params -doom, -doom2, -heretic, -hexen or -strife.

Differences from original game:

• Polygonal engine with colored lighting, with software mode, OpenGL and Direct3D support, and any resolutions up to 1600x1200
• Translucency. Some things are translucent, also spectres' partial invisibility is replaced with 10% translucency, so they are really hard to see now
• Complete support for freelook (look up & down) in all games
• A powerful language to describe game logic, Vavoom C - now you can forget about DeHackEd and DDF!
• 100% client/server architecture with in-game joining
• Quake-style console, with key bindings
• Ability to play AudioCD tracks
• Indirect support for DeHackEd - utility to generate Vavoom progs out of DEH files
• Crosshair
• Jumping
• Slopes
• 3D floors
• And many other cool things...

License: free

Additional System Requirements: zlib
libpng
Allegro or SDL
Optional: OpenAL