All you have to do is download and install the game on your iOS or Android device and you can begin playing!
Once you start playing the game, you will be taken through a tutorial that will show you what each button, action, item, etc is. The game is an infinite runner game, so you will run through the game until you lose all of your health. Quests are posted at the right side of the screen, such as rescuing a villager. Run to defeat the undead and help save the village!