Arae.io is an intense game of strategy. You have four skill slots that you fill up by choosing a set of skills. You can repeat a skill as many times as you want. Once in game, upgrade your chosen skills and health by farming the red guys. Your abilities work on them too. The real test of your skills is when you go up against other players. To be successful, you need to use your skills and intuition effectively. Use WASD to move around, the mouse to aim and shoot. Left-click for normal bullet, right click or use space to use your selected ability. You can change which one is selected by using 1, 2, 3, and 4, or by using the mouse wheel.