After watching a video of a man in a lab coat explaining that he discovered a curse related to symbols that affect reality, and that he invented the game using the symbols when he was a child, she was told by the computer that she must beat the boss. This isn't quite how it is explained to work earlier in the film, but we can roll with it anyway.
The phone line for people who are curious about the big prize remains open, even though it seems to have been decades since the game was released. We are left to believe that this time, the video game will be used to haunt those who deserve it, pointing to a subtle but political message. After receiving a phone call from the game designer asking her who will suffer at the hands of the game next, she made a move and replied "only people who deserve it."
The damage they do to themselves is actually inflicted onto the other person, so of course they both frantically try to hurt themselves, with some help from the wife and son too. His lights go out when the game asks him if he wants to turn them on or off, after he plays an old-school survival video game called CURS>R. She has little choice but to complete CURS>R even if it means losing the ones closest to her or her own life. The viewers hold their breath as she drowns herself in the pool, but for a moment we think she is dead.
The man in the video explains a part of the game that we are about to see in action. The bad guy loses and Hal chokes on water and dies, and the CURS>R game lets us know it's over.
After defeating Hal, she gets a notification that the game now declares her in control of CURS>R, meaning she can curse people.
There are a lot of questions that need answering, the main one being, what will be Kayla's next move, with the ending of Choose Or Die leaving room for a sequel. Someone will get a huge cash reward if they get through every horrifying level in CURS>R. Hal, his wife and son are all inside the house. He claims that the game promised to leave him alone if he made and distributed copies. People know not to find an old and mysterious game and take a look at how it works, it's probably going to be cursed.
The son is hiding his injuries by wearing a magazine with cutouts of his mouth and eye. This is demonstrated when Hal throws a plate at a woman's face and she doesn't get injured, but Hal does. The storyline is clever, assisted by a brilliant cast, and the terrifying visuals add that horror edge that all horror fans love to see. He saw his wife holding a knife to his son's mouth when he left the room. When she targets the drug dealer who is harassing her mother, we also see that her injuries heal.
The film begins with a mother and teenage son arguing, while the father hides in his room full of video games. The phone buzzes to let her know that she's reached the "boss battle" stage of the game. She is taken to an isolated home in the woods.