That's wrong. Render-to-texture is pro only but shaders are supported in the free edition too. And in contrast to Gamestudio, shaders are a joy to use in Unity.



The problem of Gamestudio isn't so much the engine (except maybe ODE and the problematic ellipsoid collision detection system which also is based on parts of ODE) but more the studio part.

...and of course you are stuck with Gamestudio once you have done a great game. With Unity you have to possibility to go to the web, OSX, iPhone, Wii, 360 and more in the future.