While filming the stunt where he leaps from a wall onto a tree, the branch Jackie Chan grabbed a hold of broke and he hit his head on a rock, nearly killing him and leaving him with a permanent thimble-sized hole on the right side of his head. The fall also left him hard of hearing in one ear.
The car driven by 'Jackie Chan (I)' is a Mitsubishi Colt Targa Concept, which is a two-door, two-seater version of the Colt with its roof chopped off and shorter windshield and side windows. It is a special one-off model made by Mitsubishi for the film.
Jackie Chan's hair grows between shots (see goofs). This is because before he made 'Long xiong hu di', his hair was always long, but he cut it for this film. However, after his accident, when he fell from a tree onto rocks nearly killing himself, he considered having long hair to be lucky and grew it again.
This was the first Operation Condor movie but for the US release the film was titled Operation Condor 2 because it was released after the second film. A new musical score was created by Michael Wandmacher for this release, as well as an English dub (with the participation of Chan).
This is the only Jackie Chan-directed movie to be shot in 1.85 wide-screen. Known for normally filming in 2.35, the reason for the ratio change was due to the early sequences being shot in 1.85 by first director Eric Tsang. Rather than re-shooting the 1.85 scenes, or "super matting" them to 2.35, Chan decided to film the rest in 1.85.
While shooting the hot air balloon jump, Chan skydived out of a plane and landed on top of the balloon instead of jumping off a cliff as is seen in the film. For the shot of him jumping off the cliff, the crew rigged him up to a wire as he had no experience of BASE jumping.
The musical sequence with the band "The Losers" is a spoof of the Hong Kong rock band "The Wynners". The members of the Wynners include Alan Tam, Anthony Chan, and Kenny Bee. All three appear in the film.
This movie was filmed on location in parts of what was then Yugoslavia: Zagreb (Dolac Central Market), Upper town, Trnje (near the then-unfinished building of Croatian Radio Television), Croatia, and Predjama Castle near Postojna, Slovenia. Filming was also undertaken in Graz, Austria, France, Spain and Morocco.
Cynthia Rothrock was originally supposed to act in this film (supposedly as one lone Amazonian fighter in the finale, as opposed to the four in the finished film), but due to Chan's injuries halting production of the movie, she was re-assigned to play as the lead actress in Above the Law (1986).