Surviv.io is the real survival .io game as your general purpose is to kill others and stay alive – principle of last standing player.
At the begining you have nothing but a backpack and you need to move around to find guns and ammo, also you’ll find medicines to treat yourself when you lose your health. Killing other players let you grab their loot so be careful not to be killed by others.
At surviv.io game is the “red zone” which covers the whole map but you will be notified before it comes and you should find the safe place because the “red zone” causes serious damage.
Controls: use arrow keys or AWDS to move and mouse-click to shoot.