February 20, 2009 Patch (Portal)

{{Patch layout
 * game = portal
 * source      = http://store.steampowered.com/news/2275/
 * source-title = Orange Box Engine Update Released
 * before      = February 17, 2009 Patch (Portal)
 * after       = June 23, 2009 Patch (Portal)
 * notes       =

Orange Box Engine
}}
 * Fixed stats and achievements not working in Half-Life 2: Episode Two and Portal
 * Fixed incompatibilities with MODs