ShotWars.io is a marvelous game that you can play on AvioGames.com in your browser, free of charge. It has been played by dozens of people and has received a rating of 65 out of 100 by 7 votes. This addicting game is built with HTML5 to run fast in all modern browsers. It can be played in full-screen mode to get the full experience. If you want to play .io games, check out Cell.sh or Bomber Friends.