About Ev.io Ev.io is a first person shooter. Fight to the death against opponents. The player with the most kills wins the game. You can use a variety of weapons, from shotguns to machine guns to rocket launchers, to take down other players. These imported weapons are more powerful than the original weapons. The game also has many abilities like ammo, teleport, speed and energy. Join the battle and have fun. How to play Ev.io WASD = move. Space = jump. Left mouse button = shoot. Right mouse button = target. Shift = run. Q = use of rights. 1-4 = weapon change. G = throw a grenade. I = open menu.