Behold the Sins by Rachel Serrin

Nineteen-year-old Violet Sutton lost her brother to the game of the Sins two years ago. She has since spiraled into darkness within the poor section in the City of Calesal—darkness filled with bad alcohol, bad decisions, and bad people. Every day she watches her brother’s tracker blink green in the sixth world, signaling his still-beating heart, but nothing more. So she continues to spiral, her hope along with it, until she makes her worst decision of all: bloodswearing herself into the Sins.
On her journey to find her brother, she must fight through the deadliness of Gluttony, Envy, Wrath, Pride, Sloth, Greed, and Lust. But the minute she lands face-first into the beginning world of sin, she comes to the daunting reality that it is much worse than she could imagine.
Violet is not alone. The brooding, fallen commander from her city, notoriously handsome Jack Marin, haunts her feelings and tests her temper through each world. As the danger grows and death scoffs in her ear, Violet realizes that the biggest sin she’s faced was letting this man into her life…or perhaps more.
And the big kicker? In the five hundred years the game of the Sins has existed, no one has ever exited and broke the curse on their world.
Who will rise? Who will fall?
Either way, blood will awaken at its call.
Behold, the Sins.