This impressive Minecraft mod lets you build functioning vehicles, including planes and airships

Create Aeronautics lets you travel across Minecraft's world in style.

Portal 2: Community Edition promises to up the game's modding potential, and it's in open beta now

Improvements to map editing, a new lighting engine, volumetric fog, and other improvements await.
Hackaday

Building A Rim-Driven Jet Engine

Rim-driven thrusters turn the normal propeller-motor arrangement inside out; rather than mounting the motor at the center of ...