Valve have decided to move away from the .gcf format for their new game Left 4 dead. Instead, the game is delivered via .ncf with materials, models and particles packed up in a new .vpk package format. I'm curious if this move was inspired by the performance problems caused by fragmented .gcf files. Nonetheless, I've updated both HLLib and GCFScape with support for the new .vpk format.
I'm also in the process of looking to add support for Left 4 Dead to Crafty. Early attempts look promising, I just hope the model format hasn't changed too much.
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