Arras.io

Arras.io is a fan-made sequel to the 2D MassiveMultiplayerOnline game Diep.io. The gameplay is similar to the game it's based on; at the start of the game, the player controls a simple Tank, and can kill Polygons and defeat enemy players to level up, upgrade into stronger tanks, and get points to upgrade their Stats. However, there is a lot more content than Diep.io and is updated much more frequently. After the many years of development and growth, Arras.io has evolved into a totally different game that is no longer just a "Diep.io clone".