The first game developed for Game of Phones, was a tic-tac-toe (or if you are an antipodean, Nougts & Crosses) based game that you could play on the platform formally known as Twitter. The game itself was developed for us by a developer at Clickatell, I simply did the design for the landpage.
I used Adobe Photoshop to design the landpage layout, and I coded using simple html and css. The page itself is php, so that we could pull in dynamic content for the Leaderboard. I worked closely with the developer to get this right.