Border Crossing is a game where you play as a border control guard who must inspect the documents of travelers who want to enter your country. You must verify that their passports, and other papers to ensure they are valid and match their identity. You can stamp their passport with either approved or denied, then return their documents to them. If you stamp them correctly, you earn coins, experience and reputation. If you stamp them incorrectly, your reputation goes down and you may face penalties.

You can use coins to buy different themes for your border checkpoint, such as new stamp designs, gate decorations or workbenches. You can also unlock collectibles, view your stats and unlock achievements as you progress through the game.

The game becomes more challenging as your reputation increases as you will have to deal with more complex rules and even more documents.