It will all seem immediately familiar to anyone who played the massively multiplayer game Slither.io on mobile or the web -- which itself drew inspiration from arcade classic Snake (later revived by Nokia as a pre-loaded game on its old brick phones). For the uninitiated, Slither.io has players controlling a worm and eating pellets to grow the longest avatar on the server.

Google's Great Ghoul Duel also lets you host your own game, allowing you to invite your mates along for a quick bout of flame-chomping action. The big G is no stranger to browser mini-games, having previously launched dozens of doodle titles, including tic-tac-toe, cricket, and even Snake. More recently, it snuck a text adventure game into Search