Compete with 1-6 planeteers to build the best planet in 70 minutes and preserve the future of humanity. A revolutionary gaming component, the central turntable space station, delivers simultaneous yet strategic tile drafting, quick-setup, a large player count, and a storage solution. 144 unique polyomino tiles all contain two resources advancing the planet and propelling the player's engine. Players must compete over objectives with each neighboring play, fill their planet's rows and columns, advance their corporation's engine, all while maneuver a crew of rovers to clear the seemingly constant barrage of obstacles such as meteorites and events. There are 7 unique planets and 7 unique triple-layer corporation boards create 49 combinations to explore. Planet Unknown is "One Giant Leap" for plolyomino board games.