This document compares and contrasts several game development engines and frameworks. Unity is mentioned as being familiar to artists and animators, allowing deployment to web and mobile via Adobe AIR, and having an easy-to-use UI system. Unreal Engine is described as performant and game-oriented, deploying to Android and iOS. Godot is said to deploy to almost every platform but that 2D development is not as straightforward. It recommends that small teams keep their games simple, test with users early, and iterate quickly.