Ответ:

  1. They are computer games.
  2. The shark is swimming.
  3. The girl is playing a computer game.
  4. Shark City is the most expensive game. It costs £22.
  5. Yes, it is. Desert Adventure is Easy 4, while Volcano Disaster is Easy 3.
  6. Desert Adventure is the newest game. It was released in September 2017.