This sample is provided to demonstrate Google Play In-app Billing Version 3.
This game is a simple "driving" game where the player can buy gas and drive. The car has a tank which stores gas. When the player purchases gas, the tank fills up (1/4 tank at a time). When the player drives, the gas in the tank diminishes (also 1/4 tank at a time).

The user can also purchase a "premium upgrade" that gives them a red car instead of the standard blue one (exciting!).

The user can also purchase a subscription ("gold status") that allows them to drive with a gold car background while that subscription is active. The subscription can either be purchased monthly or yearly.