Highway Robbery is an open-world heist game in which the player must explore the world around them and complete a bunch of heists to proceed to the final heist which the player must complete to get the money required for their dying brother's treatment. 

You will start as a character on the streets of a city exploring the world around you and scouting the stores you're gonna rob. After you steal some money and objects from a store, you can use that money to buy different items from the black market shops that will make the future heists a little bit easier for you. The starting heists are gonna be easier but you will require some luxury items for the heists later on in the game because they are gonna be very hard if you do not have these items. Some of the luxury items you can purchase are:

• A Hacking Device - Allows you to hack computers to get access to codes for safes
• Flashlight - Helps you rob a store when there's no light.
• Sprinting Skill - Increases your running speed for avoiding obstacles and cops

But that's not it! Some of the stores might even have tripwires you need to watch out for, because if you trigger them, the police will be summoned to the crime scene, and you'll get caught, lose your money and be sent to prison. To escape the prison successfully, you'll need to complete a jailbreak minigame in which if you succeed, you'll escape successfully but if not, your sentence will be extended. Once you finish through all the heists using the money and the black market items, you'll reach the final level where you'll need to break into a bank vault playing arguably the hardest minigames in the whole game. When you access the vault, you'll get the money you needed for your brother's treatment and you will have completed the game.