About Surviv.io Surviv.io is a popular online multiplayer battle royale game. It is a 2D top-down shooter game where players are placed on an island and must fight against each other until only one player or team remains. The game is known for its fast-paced action, simple graphics, and easy-to-pick-up gameplay. Here are some of the basic game rules for Surviv.io: Battle Royale Gameplay: