Limit
A logo @Henry Boldizsar and I made for our CodeDay 2014 hack.
We made a 20x20 tic-tac-toe board that you can play with 4 friends online. You have to get four-in-a-row instead of the traditional three-in-a-row.
It won "Best Game" and it was a lot of fun to make!
You can play limit here.
This was my first hackathon, and it was awesome.