[Help Please] How do you create a game which...

... Gives out free items like this :

http://www.whirled.com/#games-d_2942

I for one have never tried to make a game, let alone for whirled.
Help would be greatly appreciated as I have really wanted to make a game which gives items out for free ((There weren't many and they are dying one by one ))

Hopefully daily/weekly new prizes aswell.
Thank you, and ohai Im hazer and im new to the forum XD

Well Haze, I do not know, but maybe you should ask someone who has actually made a game like what you are asking how to make.