How can I get the player's games' ID's and Thumbnails?

How can I get the player's games' ID's and their respective Thumbnail ID's through a script?

Just like in Kick Off's "click to advertise" button?

http://www.roblox.com/games/318978013/Kick-Off-BETA

This is what I'm referring to: http://prntscr.com/9825ex

I have a script that prints the Player Id to the Console, you can twist it to doing whatever, as for Thumbnails, I would have to tell you later as I'm not at my computer at the moment.

game.Players.PlayerAdded:connect(function(player) ---Checks for when a player joins the game.
     print(player.userId) --When a player does join the game, it prints their UserId to the Developer Console
end)