I am now trying to learn game development in UDK and Unity3d, just trying both out, and try to get an idea how they work, and for now im mostly focusing on the PC games..
I want to know, how hard(technically, not legal/licensing stuff) is it to port a PC game that i made in UDK/Unity to another platform such as PS3/Xbox360? is there some kind of option where we can just select the target platform from a combo box and press deploy? or do we need to modify the game for each platform? just give me a rough idea on how it works..