Well, Inglourious Basterds has roots in real events. The backdrop of World War II is real, with the Nazis and the Allied forces. But the specific story of the Basterds, their extreme and violent methods of fighting the Nazis as depicted in the movie, are mostly fictional. Tarantino created a revenge - fantasy - like story within the framework of the real - life war setting. He used real historical events as a springboard to tell a very different and engaging story that is full of his signature style of dialogue, action, and unexpected plot turns.
Inglourious Basterds is entirely fictional. The director, Quentin Tarantino, crafted the story for cinematic entertainment, drawing inspiration from various sources but not real events.
Inglourious Basterds is not based on a real story. It's a work of imagination by the filmmakers. However, it might draw inspiration from historical events and settings, but the plot and characters are fictional.
Inglourious Basterds is purely fictional. The plot and characters are crafted by the filmmakers' imagination rather than being based on actual events. It takes creative liberties to tell an engaging story.