The 1981 film "Possession" directed by Andrzej Żuławski is indeed a very interesting and unique movie. Here's some background on the film and what makes the "uncut edition exclusive" so special:
The screen began to bleed a deep, visceral violet, the color of a fresh bruise. The "monster" on screen was no longer a metaphor for a crumbling marriage; it was a blueprint. Elias watched, paralyzed, as the creature in the film began to mimic his own posture, sitting in a digital replica of his basement.
Watching the uncut edition isn't just about seeing more gore—though the infamous subway miscarriage scene remains one of cinema's most harrowing moments—it's about the emotional coherence of the narrative.