Biohazard: 25th Episode Selection Vol. 2 - Threat of Bioterrorism is a physical bundle released as part of the series' 25th Anniversary campaign. It is essentially a box set of all the numbered titles. Each package version is included in the inner box, and the sleeve that covers the box is designed with an emblem that symbolizes each episode. Resident Evil (Biohazard) 25th Episode Selection Vol. 2 contains: - Resident Evil (Biohazard) 4 - Resident Evil (Biohazard) 5 - Resident Evil (Biohazard) 6