Sentry Fortress is an exciting fighting game on www.flash-games.net for free. The goal for you is to diminish all of your enemies in the required time with the least cost. First you can choose a character from scout, sniper, soldier and spy. All of them have strong suits respectively. In the game, you can use keys of ‘A’, ‘S’,’D’, ‘W’ to control you movement and click left mouse button to shoot. Meanwhile, several icons on the game screen will do you favor, please utilize them well. This game is very challenging. Are you ready to this adventure?