Diep io is a popular online multiplayer game developed by Matheus Valadares, the creator of the famous game Agar.io. In Diep.io, players control tanks and engage in intense battles against other players in an arena-style environment. The game revolves around leveling up, upgrading your tank, and strategically outmaneuvering opponents to dominate the battlefield. Here's an introduction to the key elements and gameplay mechanics of Diep.io: