I downloaded Unity3. It is a very impressive tool for making Role Playing Games. It can do much of the work allowing one to create lovely graphics. However, the amount of "help" that a system provides is inversely proportioned to the amount of "freedom" allowed in said system. A simple example is the use of templates in GS.

An expert in either GS or Unity can create amazing games. GS provides a lot of freedom which requires a lot of graphics and programing. Unity makes those tasks easier but one must follow the "Unity" path. I doubt that I could have created my reaction time programs easily in Unity3.

Define your task, recognize one's own talent and knowledge, choose a platform and create.