Bus Parking Out is a sorting game in the parking lot subcategory similar to the Car Out Jam and Emergency Jam games. At a busy above-ground bus terminal waiting area, the player helps stickmen board buses. Their goals are to win coins to use boosters and unlock new levels.
A level scene features an underground exit to a street-level sidewalk and stickmen of various colors waiting in line for their buses. A sign displays the number of people in the queue. The nearby parking lot contains color-matched vehicles in a traffic jam, with some buses blocking other ones.
Each bus has a white arrow atop it that shows the only direction it can drive away from the jam. The player selects unblocked ones at first to make the blocked ones accessible. An unblocked bus auto-drives to one of four open parking spaces near the waiting passengers. If the player watches ads, they can unlock four more spaces.
Bus Parking Out offers two booster buttons near the bottom-center of the screen below the lot. With coins, the player can use the one marked with double arrows and a vehicle to rearrange the colors of all the buses. They can use the one marked with stickmen to sort the passengers in the line by the colors of the buses in the parking spaces.