From an MZ-80 game by Hudson. Full video here.
The Macrocom Method is a text mode trick for PC to use 16-colour hi-res graphics in CGA. The principle was to use only the top two pixel rows of each text character, and remove the rest. Image by VileR.
Clip from an Atari ATASCII animation with sound from 1987. Likely first published on a BBS. It’s called Rambone and was made by Kung Fu Master. Recovered and filmed by Ryan Goolevitch. h/t Marcin Wichary.