I hate these threads.
Nothing personal,Mustang.
FPSC has a free 30 day demo so you can try it and see for yourself.
As has been stated above FPSC is better suited for indoor games although I have built some small outdoor levels.
You can make a game in minutes using FPSC or you can make a pretty good game with it if you take the time and effort.
The software does have its limitiations but there are ways to get around this and FPSC is committed to improving on FPSC as it is.
It is going to be a while before X10 is released.
There are other game engines on the market but most of those require coding and FPSC does not.
If you try the demo and you like it thn buy the game.
If you try it and don't like it don't buy the game.
Every game making engine has its limitations.
The bottom line is that the decision and the money you spend is yours.It is up to you.