Doctor Kvorak's Obliteration Game Trailer (2016) but its audio is chipmunked
Channel: childishbeat
Date: 2017-05-02

Credits:
Doctor Kvorak - Freekstorm, a family studio of British indie game developers founded in 2008. They're currently working on Doctor Kvorak’s Obliteration Game, an atmospheric single-player 3D adventure game for HTC Vive, Oculus Rift, OSVR (Open Source Virtual Reality) and Windows, but since Unity is used to make the game, the game might eventually be released for various other platforms, such as Linux, Mac, Nintendo Switch, PlayStation 4 and Xbox One.
The chipmunks from Alvin and the Chipmunks (Alvin and the Chipmunks was first created in 1958 by Ross Bagdasarian, Sr. for a novelty record, by the way) - The type of voice you should be able to hear in this video. However, the rest of the audio of this video had its pitch increased as well.