There are three books and each of it has numbers on it. Look for the number which is not seen to the other, there's one for every book. Find those number before the time runs out.
Evony
Strategy
Stardew Valley
RPG
Evertale
RPG
Candy Crush Saga
Casual
Extreme Car Driving Simulator
Action
Subway Surfers Berlin
Casual
HOT
Temple Run 2
Action
HOT
Plants vs Zombies 3
Casual
HOT
Stickman Hook Animation
Action
HOT
Moto X3M
Action
HOT