In Battle Trio, players lead a team of two thieves to steal resources, but they must fight security forces before successfully stealing. In each level, the player and the three-person security team will fight each other in turns. Each of your two characters can choose skills such as Attack, Powerful Attack, or Healing, each skill requiring a certain amount of energy. Each time you successfully take down a member of the security team, you will receive money. During combat, you can use auxiliary items such as restoring a portion of a team member's health, protecting from attacks for one turn, or stunning a member of the security team. Victory is achieved when all members of the security team are defeated, and defeat is when your team is completely captured (runs out of health). There are a total of 5 levels, unlocked sequentially by winning the previous level, with the security team's strength gradually increasing. Use the money earned to buy additional uses of side props.