I really hesitate to point this out, but there may be a theoretical way to port half-life and half-life 2 to the pandora. You may remember, back in 2003 a year before hl2 was released the entire source code of half-life 2 and a playable version were leaked. While the code was leaked an entire year before hl2 came out, the engine was mostly finished at that point. However, the leaked source engine was fairly buggy but fortunately there's a fixed version called The Axel Project thats quite stable. Of course, the Source engine at this point in time only had a DirectX render. However, since Valve released ToGL, it may be possible to compile the leaked hl2 source code for the Pandora. Along with the leaked hl2, there was a version of half-life: source leaked too. Since the source code is so old for both of these, it would be necessary to convert all the retail models and maps to older file format versions in order to use them.
DISCLAIMER: All of this is just theories and speculation. Actually porting hl & hl2 with the leaked source code should not be done. Valve has not given their permission for any one to use the leaked code, and thus using it is illegal.
