In 1992, Psygnosis with development by Art & Magic, released the gorgeous owl flying shoot em up of AGONY, for the Amiga system. It was a very impressive game for its time using features such as scales of colors done with raster lines, halfbrite graphics mode for the between-level pictures, three layers of parallax scrolling using dual-playfield mode, in-game palette swapping, and continuous
From: Indie Retro News