A walkthrough of the ZX Spectrum game, Nave. A 1991 game published by Lusitania (Portugal). This has only just recently been recovered, only the intro was available online until now. More info. on this here: https://spectrumcomputing.co.uk/forums/viewtopic.php?f=30&t=2258
From the recording originally sent by Pavel Plíva to http://www.rzxarchive.co.uk/ . Recorded using "rollback", a feature of the emulator which allows you to mark a point, which you can then roll back to later if you get into difficulty, and try again. More info. on the channel "About" page: https://www.youtube.com/user/rzxarchive/about