How can I get a survey on my website that pays me if people fill it in?

You know when youre about to download a game or something but than the site opens a window and you will first have to complete one offer to get the do

You know when you're about to download a game or something but than the site opens a window and you will first have to complete one offer to get the download. Offers like:' win iPhone 6, win free macbook etc.
I want to get that on my website, does anybody know how or what company I need to approach for this?

or:You know when you're about to download a game or something but than the site opens a window and you will first have to complete one offer to get the download. Offers like:' win iPhone 6, win free macbook etc. I want to get that on my website, does anybody know how or what company I need to approach for this?

Tags:website,