I have participated in and won awards at several local hackathons.
Most recently, my team won 1st place at CodeDay, a competition challenging teams to create computer games from scratch in 24 hours. We created "Running Blind", an ambient-style game with a soft, minimalist aesthetic. I developed the graphics effects in this game using custom pixel shaders in XNA. We are continuing development on this game, and plan on releasing it commercially:
You play as an explorer shrouded in darkness, who must navigate a dangerous labyrinth guided only by sound. Running into a wall or firing your sonar gun will illuminate the maze -- but beware: enemies activate at the slightest sound!
I led a team to win 1st place at HACK, a similar video game programming competition. We developed "S.S. Halfling", a fast-paced action shooter:
You play a convict escaping from a sinking prison ship, and must navigate through the ship before the water reaches you. However, the ship is haunted, and you must take care to evade the ghosts. You are equipped with a pistol to blow through weakened walls, and can pick up keys to locked doors.
I led a team to win 1st Place at AT&T's Mobile App Hackathon for "Head Shot", a laser-tag game based on camera phones. We developed on the Windows Phone 7, using SLARToolkit for image processing and IP multicast networking.
Here is my team, wearing AR-tags for player identification:
My team earned an Honorable Mention at Startup Weekend Seattle, for developing Tapin.TV, a service that links geolocation to mobile video to promote citizen journalism.