To make an educated (if untested) guess as to what's going on- the 256MB of memory assigned might be larger than the PlayMovie extension ever expected to see- 1-4MB was far more common when the game was made, let alone the HyperCard program behind it, and the absolute max -with a Macintosh SE/30 or Macintosh II- was 128MB in the same period.
Exactly what it says on the tin.
To make an educated (if untested) guess as to what's going on- the 256MB of memory assigned might be larger than the PlayMovie extension ever expected to see- 1-4MB was far more common when the game was made, let alone the HyperCard program behind it, and the absolute max -with a Macintosh SE/30 or Macintosh II- was 128MB in the same period.