Unity

Unity (fmr. Unity 3D?)
Release date:	Current
Made by:	Unity Technologies
Runs on:	Linux Mac OS Windows
Exports to:	Android Browser Facebook iOS Linux Mac OS Windows

Unity is a popular, free game making tool. There's lots of support availible online, and you can do quite a bit without even having to bother with JavaScript or C# :) It's real easy to just plonk some primitives or free models in and be able to walk round and have things effected by physics :)

NB: Unity has no problems working with the US military:
Unity Workers Question Company Ethics As It Expands From Video Games to War
Unity Made a Dogfight Simulation for the Air Force’s ‘Kill Chain’ Branch
— rjt (talk)

Extending

Add-ons and things for adding more features to Unity.

Asset store things

• Primitives - There are a bunch of primitive sets on the asset shop, but of the two I've tried this seemed to work the best.
• World Physics System - Simulates multiple gravity points, good for space games where planets effect your movement. I can confirm it still works in Unity 5.
• NumberFlow - Procedural texture generation.
• etc

Interface add-ons

• Simple Geometry Painter - Some .CS scripts that add nice 3-D object drawing tools to Unity.
• RealtimeCSG - Very comprehensive add-on for making levels with Constructive Solid Geometry, including being able to use curved surfaces.

Other

• UnityHawk - Run and interact with emulators in Unity.

See Also

• Best Unity Assets by Keijiro TakahashiLots of neat Unity things (Reddit :( ).
  • github.com/keijiro

Export Options

More: Exporting in the guides section.

See Also

• Unity in the Guides section: help with scripting, finding things in the UI, etc.
• Shaders in the Assets section.