The Puzzle Maker tool is part of the “Teach with Portals” initiative by the game’s designers, Valve Corporation. The tool is a simplified level editor where players can build puzzles using the components found in the official game—turrets, repulsion and speed gels, and other elements. Players can rapidly design and test their designs in order to refine them into effective and challenging puzzles. The Puzzle Maker tool was released for the commercial version of Portal 2 as well as part of Valves Steam in School program, where teachers and players have access to lesson plans and a community of other teachers and learners to share their puzzles and their lessons.