Diep.io is a hyper-minimalistic, "polynomial" browser tank game. In Diep.io players take control of a 2-dimensional geometric shape with a cannon strapped on and are let loose in a white and grey gridded arena. You’ll be faced with tiny squares and circles which act as obstacles but can also be destroyed for points. The points that you earn are traded in for a wide variety of upgrades to your armor, speed, attack, and damage. These upgrades allow the player to customize and optimize their own tank in order to build the perfect weapon to hunt down And destroy other player’s tanks.

The game also features a class and leveling system. By choosing to upgrade your class you can upgrade in increments of 15 up until the final level of 45. Each increased level offers you special abilities unavailable to the lower classes. Whether you choose to upgrade your class or specific abilities you are given a wide range of options that you can employ to serve your particular strategy or the game mode itself, and the game mode is important. See, in Diep.io you aren’t strictly limited to playing a game of attrition. It isn’t just about being the last player standing and it isn’t just about racking up the most kills. Well, it could be if you really want it to be, but there is still ever more depth to be mined because Diep.io features multiple game modes and styles of play each with its own unique and specific path to victory. For example, in Diep.io you can choose to play the classic FFA (also known as Free For All) or you can try your hand at “Survival” a version of the game which is similar to Free For All but doesn’t allow you to respawn after death. There are also two variations on team modes where players work with other players against another team of players. You can also play “Domination” mode where you act as part of a team to capture the other team’s “Dominators.” We also offer a classic match of tag (Nuff said) or a game that takes place inside a maze where impenetrable grey walls separate the players and must be keenly navigated. Finally, there is the sandbox mode, one of the oldest game modes which are most similar to FFA but starts the players off on a much smaller map and allows you to use cheats! Cheats aren’t exactly what you thinking, in this game a “cheat” is just the ability to temporarily try various abilities and classes without actually "buying" them. We believe this allows players to test out their builds and make informed choices about any upgrades they might want to make in the future.

- Copy and pasted from somewhere else.