Warcross

Warcross by Marie Lu

Warcross is a super popular game that everyone loves to play and watch. The billionaire creator had lost his brother when he was young. Now he has a grand plan that nobody knows about.

The protagonist is a young woman who is struggling to make ends meet. She is secretly a great game player and hacker. She gets her chance to participate in the big game tournament after she hacks into the opening ceremony. The game creator recruits her as a type of "bounty hunter" to find people that may be trying to undermine him. She has a lot of success and learns a lot about the creator and enters into a small romantic relationship with him. However, one of the underworld guys she is tracking is her match. 

The story goes well, but the end gets trite. The game creator wants to eliminate crime and provide full historical access to memories. She feels that this could get people a loss of control. Maybe she should have partnered with the underworld people. But they were also mean.

The book feels a lot like Ready Player One.