Sensurround (Universal)
https://en.wikipedia.org/wiki/Sensurround
Surround 360 (20th Century Fox)
https://en.wikipedia.org/wiki/Sound_360
Megasound (Warner)
https://en.wikipedia.org/wiki/Megasound
https://en.wikipedia.org/wiki/Sensurround
- Earthquake 1974 - Included on the Shout Factory Blu Ray as DTS-HD 2.1 and several other blu rays as DTS-HD 5.1
- Midway 1976 - Included on the Universal Blu Rays as DTS-HD 2.1
- Rollercoaster 1977 - Included on the Shout Factory Blu Ray as Dolby Digital 3.1 and the UK 101 Blu Ray as DTS-HD 2.1
- Battlestar Galactica 1978/1979 - Included on the Universal Blu Rays as DTS-HD 2.1
- Alien 1979 - Included on the Fox Laserdisc [8760-85]
Surround 360 (20th Century Fox)
https://en.wikipedia.org/wiki/Sound_360
- Damnation Alley 1977 - Not included on the recent blu ray, reports are the original elements were not salvageable
- Damien: Omen 2 - Never appears to have been released on home media
Megasound (Warner)
https://en.wikipedia.org/wiki/Megasound
- Altered States 1980 - Never appears to have been released on home media
- Outland 1981 - Never appears to have been released on home media
- Superman II 1981 - Never appears to have been released on home media
- Wolfen 1981 - Possibly included on the Blu Ray - reports state the DTS-HD 5.1 is derived from 70mm 6 channel audio