Unity is an engine known for having capabilities for creating great 3D games that will run even on mobiles. Some examples of 3D that used Unity are Samurai: Way of the Warrior, Samurai II: Vengeance, Shadowgun and Battlestar Galactica Online.
Although creating 3D games is not it’s only use. Many developers have proven that Unity is also a great tool for creating 2D games. Zombieville USA, Zombieville USA 2 and GLiD, which won the IGF student showcase award.
What are some of your favorite games that were created with Unity?