Celebrating 39 years of the Sinclair ZX Spectrum home computer, this channel contains walkthrough videos of over 2500 Spectrum games. Games from 1982 right until the present day! A quick way to see all available videos is to look here: www.rzxarchive.co.uk/videos
These videos were made from RZX files sent to rzxarchive.co.uk . These are recordings of Spectrum gameplay, which can be made & played back on compatible Spectrum emulators.
Most of the recordings were made using a technique called "rollback", which allows the user to mark a position, which they can then roll back to if they get into difficulty, and try again, until you get the "perfect" recording. If rollback was used (or any POKEs, etc), it will be indicated in the video description (unlike some channels I could mention).
Is this cheating? Of course it is. The RZX Archive isn't a competition site to show off skillz, however. It's a "demonstration" site, simply showing how speccy games can be completed.