An absolutely magnificently written crossover with Resident Evil, Cthulhu Mythos, and Neon Genesis Evangelion. Currently at 7 chapters and counting. Point-of-view varies between characters, and each is incredibly well-written and mostly canon in characterization (there are perhaps a couple of exceptions, but for the most part they're spot-on). One of the best Code Geass crossovers I've ever seen. I can't recommend it enough.