Online games bring geographically separated people together in a virtual world. Board games bring people together in the physical world. QRtcullis is a game that does both. It is a place-based, multi-player, social game that can be played on any smartphone, tablet, or computer. It is a remix of the fort-explorer genre, updated to have a connection to the physical world through QR code-based markers. Play can be affected by real-world environment factors. Each fort can be populated with various objects that either help or hinder other players. Completing the fort may require solving a maze or other puzzles, answering riddles, or finding answers to questions about the real world. The goal is to find and complete as many forts as possible. QR codes will be placed throughout the Media Lab and on a screen in the Viral Spaces area where you can see and interact with all the players.