https://wccftech.com/halo-2-full-pc-release-halo-3-odst-alpha-coming-soon/ > Microsoft is taking a piecemeal approach to Halo: The Master Chief Collection on PC, releasing each game individually as they’re able to finish it. So far, Halo: Reach and the original Halo: Combat Evolved have been delivered, and Halo 2 is currently in testing. That said, it seems the pace of development may be picking up somewhat, as 343 Industries’ latest dev blog hints that Halo 2’s full release and Halo 3 and Halo 3: ODST alpha testing may be coming soon. Here’s what they had to say, specifically… > On the remaining games development front, we are approaching solid Alpha candidates for both Halo 3 and ODST, stay tuned for more sharing on these titles (and eventually flighting!) as we get further into development. [...] If all goes according to plan it shouldn’t be too much longer now before Halo 2 officially releases on PC and then we’ll get ready for Halo 3 flighting!