2099.io is a difficult 3D Shooter game online concentrating on a brutal fight between humans and robots. The fight took place in the year 2099 when the planet was intruded by waves of alien robots with evil monsters. You are the only hero who can rescue the world, so stand up and fight for the ultimate glory. You need to roam the arena carefully to shoot down the enemies that are in your sight. Get rid of as many monsters with other opponents as possible to increase your ranking on the leaderboard. Don’t forget to gather coins to improve your weapons, making your hero stronger than ever. You can even get new items if you share the game on Facebook. Develop your own smart strategies and use them to cope with all dangers. Always stay focused on the combat because any slight mistake is enough bad to bring your game to a fast end. Good luck!