Three Amstrad Action type-ins from 1988 &1989.
'Patterns' - 1988 'Hypno-Strobe' - 1989 'RGB Mosaic' - 1989
All programs are given three minutes of Running time and are Listed in the video.
Links:
https://www.cpc-power.com/index.php?page=staff&lenom=Nigel%20MYERS
https://cpcrulez.fr/auteur-nigel_myers.htm
Not emulated - original hardware and software.
Please note that the aspect ratio for this YouTube video is 16:9 but the CPC monitor
has an aspect ratio of 4:3 so you may wish to adjust your viewing device accordingly.