Box Simulator for Brawl Stars is a free simulation game developed by boxgiftsimulator for Android devices. The game is not affiliated with Supercell, but rather created by fans of Brawl Stars. The app is a crate opening simulator that lets you open boxes and cases to get the newest brawlers and gems. You can open the boxes at the same second and get the coolest games with new characters.

The game is designed to help you collect all the brawlers in Brawl Stars, and it's a fun way to see the chances of opening boxes and getting a brawler out of the box. You can also complete achievements in the cool chest opening games and get rewards. However, it's important to note that you cannot transfer characters or other valuables from this app to Brawl Stars. The game also contains a simulation of all Brawl Stars game modes, including 3v3 Brawlball, Reward for Capturing 3v3, Capture Crystals 3v3, 3v3 Robbery, and Clash.