You may remember that, last month, Google tested and released details on a new way for developers to put their apps or games on sale for a limited amount of time. It seems like a few developers have been taking advantage of this, as there's a handful of items available for free.

Three of these are down from $0.99, and one down from $4.49. The former includes Survival Online GO, where the aim is to survive in an open world against other players. Your character levels up and gains new abilities, weapons, and armour, leading him to become the best warrior.