You put on a headset and go into a game I think you can create a world

[Courtney]

A girl puts it on to save her sister. I can't remember if the sister dissapears physically or is in a coma state. She had gone into the game world and never came back. Her sister goes in and has to rescue her sister before they both die in the game and real life. She has to fight off things that want to harm her so if they die there they die for real.

[Bren fall in love with the sea.]

is it "Invitation to the game"?

https://www.goodreads.com/book/show/1...