Subway Surfers

Subway Surfers: the epitome of racing games. 
Many have commented that this is the gaming app to have; with world tours, new characters, and challenges at every turn, Subway Surfers is EPIC! You can unlock Super Mysterizers on Monday, and Super Mystery Boxes on Wednesday. And don't forget the weekly sales. 
The main goal of this game is to earn coins and get as far as you can in your surfing period. You can double tap on the screen to use a hover board, which saves you a life if you accidentally run into a train while riding. If you stumble over something, the Security Guard and his nasty dog catch up to you. Run as fast as you can to get away from them, because if you stumble while they are close to you, you get caught! 
Use your coins to buy hover boards, characters, and things like Mystery Boxes from the shop. Also, you have keys which you can use to regenerate your surfing period if you get caught or are run over by a train. The keys are used for buying outfits for your characters, too.
Subway Surfers is the best racing/surfing app to have. You have endless possibilities in your perfect world of the Subway!