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README.md

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+![hl2sb-src](http://hl2sb.googlecode.com/files/Half-Life%202%20Sandbox%20Title%20Logo%2048%20pt.png "hl2sb-src")
+
+Source to Half-Life 2: Sandbox - A free and open-source sandbox Source engine modification
+
+Half-Life 2: Sandbox is an open-source sandbox modification of the Source Engine which provides Lua as a scripting platform for developers to quickly prototype game ideas. The minimalistic game includes a sandbox gamemode for playing with the many aspects of the Source Engine.
+
+### Proudly powered by
+
+[![ARGG](http://skew.telefragged.com/mods/hl2/ARGG/ARGG_button.jpg "ARGG")](http://skew.telefragged.com/mods/hl2/ARGG)
+
+**Adnan's Rotational Gravity Gun**  
+Adnan Zafar  
+adnan.f.zafar AT gmail DOT com  
+http://skew.telefragged.com/mods/hl2/ARGG/  
+
+ARGG is used by Half-Life 2: Sandbox to implement rotational functionality for the physics manipulator.
+
+[![Open Steamworks](http://hl2sb-src.googlecode.com/files/opensteamworks_logo2.png "Open Steamworks")](http://opensteamworks.org/)
+
+**Open Steamworks**  
+Open Steamworks is used in Half-Life 2: Sandbox for mounting additional game content through Steam's abstraction layer rather than the game engine's filesystem class, which prevents non-fatal engine errors.