Vavoom requires a data file from at least one of the following:
  Doom shareware, Registered Doom, Ultimate Doom
  Doom 2: Hell on Earth
  Final Doom: TNT Evilution
  Final Doom: The Plutonia Experiment
  Heretic shareware, Heretic registered
  Hexen
  Strife shareware, Strife

The following parameters are accepted to start a specific game if all
data files are present: -doom, -doom2, -tnt, -plutonia, -heretic,
-hexen, -strife

A basic launcher has been installed under the name vlaunch