wav

As its own name extension indicates, wav corresponds to a test sound file, likely used to verify digitized audio playback in some programming project for systems in the Atari family. It doesn't constitute a game or a playable demonstration in any sense, but a technical development resource that ended up preserved alongside the rest of the scene's material. This kind of loose file is an inevitable part of any broad preservation archive: fragments of internal work that document the creation process as much as the finished games themselves.