This document summarizes a robot arena game project. It includes an architecture overview with three main components: world representation using an arena map, robot characters, and physics simulation; individual AI using behaviors, decision trees, and evaluation; and group AI using a defense-based strategy. It describes the arena map, robot characters, physics simulation, individual robot behaviors and decision making, and how group AI evaluates threats and provides support to robots in danger. The project presentation includes videos demonstrating the game's physics, behaviors, and defense-based group strategy.