Global special effects are like when you watch a movie or play a video game and there are really cool things happening that aren’t real. They make the story more exciting and interesting to watch or play.
For example, in a superhero movie, the hero might have superpowers like flying, shooting lasers from their eyes, or turning invisible. These things aren’t real, but the special effects make it look like they are.
Global special effects are used to create these cool things on a really big scale, like when you see a whole city get destroyed in a movie or a giant monster attacking a city.
They use computers and other fancy machines to create these effects and make it look like it’s really happening. It’s kind of like playing with a toy and using your imagination to make it do amazing things, but this is on a much bigger level and made for lots of people to see.
So, global special effects are when amazing things happen in movies or video games that aren’t real, but look very real because of computers and machines that help create them.