You will play Tringle.io against other people on the map, which is a skill game. In this game, you'll be in charge of a triangle and have to shoot your opponents to death.
Always shoot, even if you don't see anyone. Your bullets can hit farther than what you can see. Players can be killed this way when either you or they don't see them.
You should decide what your strategy is and then pick upgrades that fit with it. Because of this, you can use dozens of different strategies. Bear in mind that if you improve any part of your triangle, you will lose points.
The WASD keys let you move. To shoot, press the left button on your mouse. If you press the numbers on your keyboard, you can choose from different upgrades.
Have fun and good luck!