SimplePlanes

Build airplanes by snapping parts together, designing wing sections, and attaching engines. At any time, enter the cockpit to test how your aircraft flies using realistic physics. If you do not want to build, more than 100,000 airplanes are available to download for free.

SimplePlanes has no established narrative storyline. The game focuses on designing aircraft, testing them with realistic flight physics, and piloting custom-built or community-created planes.