How long does a summary have to be

2 to 3 paragraphs depending on what u are summarizing

Not more than a paragraph of 9-10 lines. It's a summary after all...

The version with vivid language is more interesting. I can see the main character playing the game and hear him shouting. I can feel the pain in his forehead and the tugging at his cap. The language connects with my senses in a way that makes the story seem real.