A Megademo is a multi-part demo production on the Amiga that loads distinct sections sequentially from floppy disk, contrasting with single-file demos that fit entirely in memory. These productions typically featured numerous effects, graphics, and music modules across multiple disks, requiring the user to swap disks and press keys to progress between parts. Megademos were cornerstone releases in the Amiga demoscene during the late 1980s and early 1990s, showcasing the collaborative efforts of demo groups to exploit the custom chipset through varied technical demonstrations.