DEFINITIONS FreeAge: It is our own engine, developed since the setting up of the company and it allowed us to make 10 games on DS/DSI, Wii and PC. In 2009, we had created a multi standard line running actually on PC, Wii & DS/DSI and for soon on PSP. Furthermore, a team is working now on improving the engine adding a network library games and a free-to-play division.
Unity: Unity is a multiplatform game development tool, designed from the start to ease creation. A fully integrated professional application, running in PC, Mac, I-Phone and Wii and which possesses an efficient publisher to direct game and prototype very fast: the value for money is very attractive and his tools could be put like flash with the web quickly.
Serious Game: A serious game is a game designed for a primary purpose other than pure entertainment. The "serious" adjective is generally appended to refer to products used by industries like defense, education, scientific exploration, health care, emergency management, city planning, engineering, religion, and politics.
http://en.wikipedia.org/wiki/Serious_game
ARG: (Alternate Reality Game), An alternate reality game, is an interactive narrative that uses the real world as a platform, often involving multiple media and game elements, to tell a story that may be affected by participants' ideas or actions. The form is defined by intense player involvement with a story that takes place in real-time and evolves according to participants' responses, and characters that are actively controlled by the game's designers, as opposed to being controlled by artificial intelligence as in a computer or console video game.