Fister is a free, browser-based 3D physics brawler developed by Bootloop Studio, an independent team of two lifelong gamers. Built for quick, lively multiplayer matches, the game lets players punch, parry, grab, and launch opponents across chaotic arenas using real-time physics. Rounds last six minutes, and players can join or leave without penalty. Fister runs on modern browsers across desktop and mobile devices, including Chromebooks, iPhones, iPads, and Android phones and tablets. It supports keyboard and mouse, touch controls, and controllers, with no download or installation required.

Players can jump into modes such as Fist for All, King of the Hill, Team Fistmatch, and Capture the Fist. Weapons, powerups, and round modifiers add unpredictable twists, while accessible basic controls leave room to master advanced moves. Fister can be played as a guest or with an account. Registered players can save stats and progress, earn XP and Tokens, collect cosmetics, choose a username, add friends, and compete on the global leaderboard. The site also provides game guides, release news, and support.