Found my old UFO set: 6975 in the attic. Forgot how awesome this set was! It was purchased in Germany sometime around the year 1998 and is still in perfect condition : r/lego
LEGO 6975 LARGE UFO Instructions, Space
LEGO 6975: Alien Avenger | Brickset: LEGO set guide and database
LEGO UFO Alien Avenger 6975 Review! Best Minifigs of the 90s? & Heat Changing Color Stickers... - YouTube
LEGO 6975 Alien Avenger Set Parts Inventory and Instructions - LEGO Reference Guide