The film has simple enough plot - a group of alien creatures attack a group of hoodlums within a south-London apartment block. However, there is something with how the film is pulled off that just makes it a joy to watch.
Part of its appeal is that the film goes back and forth between being a serious sci-fi/horror film and comedy. For me, it is the tension-breaking comedic moments that make the film.
It's also nice to see a creature film that doesn't rely on expensive CGI effects (the aliens are obviously puppets).
Overall, Attack the Block was a fun film that I highly recommend checking out.