this be available on rca ced videodisc and rca videodisc format from 1981 1986. i be watch it right now with my son on ced . you can find the disc and machine at on the web at ced central . be originally make for tv and so it have a lot of actor that appear mainly in television production . the 70 standard of special effect may seem dated and but it have it own charm for young generation and nostalgia for those from the time period . actually and i find the low tech special effect easier on the eye than the computer wizardry of today . i look at the digital effect of today and the imagery seem thin and repulsive . live action blue screen and low tech crawl up the side of the building when it on the flat simpler and but the imagery be rich and more full . i find that more appealing to suspend my sense of disbelief .