even though i dissaprove of such editors. (makes my 500 lines of code in C++ to build a 3d cube seem an insignificant acheivement
), there is much more to game design than that. Though i don't know if there is any coding involved in this fps maker. A way better start to your game development hobby would be using gamemaker at
www.yoyogames.com. Since it starts with 2d and has it's own coding language that introduces you to coding (though there is an alternative drag-drop but you'll soon be able to make the transition to coding.) Though if you're more of a 3d modeler than a programmer, than you can use this to see how your models look in an FPS game. Though still, i'd doubt it includes the option to create an executable file in the trial version.