Ultimate Boxing

Ultimate Boxing brings a fast, arcade-style boxing match straight to your browser's side panel — no tabs, no interruptions, just quick rounds whenever you need a break. How to play Face off against an AI opponent using jabs, hooks, and uppercuts. Manage your stamina, time your guard, and knock out your rival before the bell. Features: - Classic arcade boxing gameplay with smooth sprite animations - Left and right hooks, jabs, and uppercuts - Stamina system that rewards smart timing over button-mashing - Full sound effects and soundtrack - Opens instantly in the Chrome side panel — keep it open alongside any website - No sign-up, no ads, no internet connection required Privacy first Ultimate Boxing does not collect, store, or transmit any personal data. It runs entirely offline inside your browser. See our full Privacy Policy for details. Click the extension icon any time to open the ring in your side panel and get a quick match in between tasks.