Look! Up in the sky! It’s a bird! It’s a plane! It’s a ... lovable animal-herding UFO! In Flock, players take control of an alien UFO that is tasked with herding animals to its mothership through a variety of interactive levels. Players will have to overcome the stubbornness of the temperamental beasts (this may require the use of fear, or amorous yearnings, etc.), as well as a series of environmental puzzles that must be solved using Flock’s physics-based gameplay. By finding or making a passable route, players can herd the animals safely toward the ship. Solving the puzzles within the suggested time limit yields exciting rewards. But players can also take their time to find more hidden bonuses.

Flock uses a sophisticated physics engine that drives the challenging puzzle elements of the game. Whether it’s using the Tractor beam to move obstacles out of the way, or the Depressor beam to stamp out crop circles to guide your herds, being an extraterrestrial has never been this addictive. Friends can also join in through co-op play. And when all the levels have been completed, users can make their own with the level editor that comes with the game.