I can’t tell you much about this mod except that it is supposed to be a leak. There are some levels from the E3 demonstration and plenty of levels I haven’t seen before.
What content there is in this mod is very similar (almost identical) to the Library of Leaks mod which is based on the pre-release HL2 Beta files leaked/hacked from Valve. The HL2 Beta files were than acquired by the Missing Information team, and were then in turn leaked/hacked from them to the Lost Concept Dev team. However, unlike the Missing Information team, who went on to make something worthwhile out of those files, the Lost Concept team did virtually nothing to the original files so that this ‘mod’ is little more than a collection of Valve’s prototype development maps, crude and incomplete, literally concept models.
There is very little to do in the majority of the maps, which are very basic and blocky. Occasionally there’s a few seconds of firefight with some developmental Combine, but not much more in the way of interaction.
This ‘mod’ is presented more as a curiosity than something which should be played; it would have had much more relevance at the time HL2 was in development, but as it stands it is barely recognizable from the finished product.
I should have played every level and noted which screenshots are related to which level but to be honest, I got bored and quit. At the time of the original post, the Mod’s development team requested that the download be removed as they were still working on it. However four years have now passed and it is reasonable to assume the Mod is dead (the homepage has expired) so I have allowed downloads again.
- Title: Lost Concept
- File Name: hl2-sp-lost-concept-dev-4.7z
- Size : 188.02MB
- Author: Unknown
- Date Released: 10 October 2008
- Copy the Lost Concept folder into your SourceMods folder.
- Restart or start Steam.
- Lost Concept should now be listed in your Library tab.
You will need to open each map manually
- Open the console and type maps * then enter/return.
- A list of maps will now appear, choose one (say mapname.bsp) and in the console type map mapname.bsp
- Press enter/return or click the Submit button.
- Play and Enjoy.
Click on the thumbnails below to open a 1024 pixel wide image.
WARNING: The screenshots may contain spoilers.
Please note: These statistics are valid from December 2010
4Last 7 days
21Last 30 days
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