Quote: "The game probably will cost, but all the Beta testers, get it freely "
It is your choice, but the quality of what you present here does not look like anyone would buy it.
I'm honest with you, it is bad.
You can see a shadermap of the scififloor on the brickwall in screen 2 right over the window.
Somethin is wrong with the lightmapping as the textures do not tile very well.
The level structure and design is almost not existant.
You can see a wrong ceiling element in the first screenshot.
Buying the essential FPSCreator packs and throwing them around in the editor is fun but please don't try to sell it.
I don't see anything in these screenshots that can not be made within less than 5 minutes.
All I can suggest to you is to read the basic manual and the community guide (in your "docs" folder) to get a feel of actual work in FPSC.
-Wolf