Other mistake: One joint, already partially smoked by Bobby and Jonathan when Mrs. Glover enters the room, gets passed around a few times and lasts for an unusually long period of time. When it is already too small (barely big enough to be held), more hits are taken but the joint doesn't really get smaller. (00:12:42 - 00:17:03)
Other mistake: When Rebecca uses her computer to record movements in the greenhouse, the footage on its screen does not match with reality. (00:44:27)
Other mistake: After the opening title, the film opens on a large screen displaying Yugi's achievements. Just as the narrator says, "In the three short years...", Yugi is holding the Exodia card, but the card features Japanese text. This can be seen in the English dub, even though all duelling cards are generally translated from the original Japanese language to English. (00:05:27)