I've taken a difficult task of recreating the whole original Half-Life game in Minecraft. It will be fully playable, with monsters, NPCs and environment, although without a texture pack nor any mods, as I want it to keep Minecraft-ish as much as possible.

I've already recreated Anomalous Materials, Unforeseen Consequences and almost half of Office Complex. They are fully playable, with fully-working Resonance Cascade and monsters. I've uploaded some pictures of already-done areas with comparison to the original HL in top-right corner (just like the Black Mesa team released made media releases).

I uploaded a world save and probably won't expand this map anymore. Enjoy!