The original Halo: Combat Evolved (2001) and Halo 2 (2004) are not backward compatible on Xbox 360. Microsoft's backward compatibility program never included them.
| Platform | Method |
|---|---|
| Xbox One / Series X|S | Full backward compatibility for Halo: CE Anniversary (disc or digital). Halo 2 Anniversary via MCC (Game Pass or purchase). Original Xbox discs do not work. |
| PC (Steam / Microsoft Store) | Halo: The Master Chief Collection includes both Anniversary editions plus a classic graphics toggle. The definitive way to play. |
| Original Xbox | Authentic hardware + discs. Hard to find working consoles; video output requires component/HDMI mod. |
Bottom line: On Xbox 360, you're limited to Halo: CE Anniversary. For the full classic duo, use Xbox One/Series X|S or PC.