User-agent: *
Disallow: /categories/

Allow: /categories/action/
Allow: /categories/adventure/
Allow: /categories/arcade/
Allow: /categories/casino/
Allow: /categories/fighting-games/
Allow: /categories/puzzle/
Allow: /categories/racing/
Allow: /categories/shooters/
Allow: /categories/skill/
Allow: /categories/sports/
Allow: /categories/other/
Allow: /categories/aliens/