You live in a dimly lit, exotic apartment basement in a small, cluttered office. You don’t know what your neighbors are up to. But you want to know everything. Build a Network In Beyond the Doors, your job begins every night right when your neighbors shut their doorsand disappear. Place recording devices near their doors. Build a chain to transmit the sound back to your basement office. Collect, analyze, and send these sounds to the people who request information from you each day. Upgrade and Optimize As you place more devices, your network will grow more complex. It's up to you to set up the right connections and fix broken network. Use the credits you earn to buy upgrades, merge tangled chains, and build the perfect network. Mysterious Events Climb the stairs. Walk the halls. Dig through trash. Sometimes you’ll find random documents or new devices to aid your mission. While doing all this, you may witness some mysterious events. Maybe there is a different universe waiting for you behind the doors you think you can't enter. Features First-person exploration of a mysterious and exotic apartment building in a retro 3D environment Automation-based network building and optimization Management of the economy with a collect-analyze-send loop Devices and network upgrades Random events