The 14th release isn't the complete project but it plays all the way until lambda core chapter: http://forums.blackmesasource.com/showthread.php?p=480683#post4

The 14th release isn't the complete project but it plays all the way until lambda core chapter: http://forums.blackmesasource.com/showthread.php?p=480683#post480683 http://forums.blackmesasource.com/showthread.php?p=480683#po... >This will include our re-envisioning of Half-Life all the way up to Lambda Core. We believe this is a great way to provide a complete-feeling 8-10 hour experience with a solid ending, make our fans happy and help us make the best overall game possible. >We are still working hard on Xen and BMDM, but instead of making you wait we are giving you Black Mesa as soon as it's ready!