Halo 3 alone requires about 25-30 GB of the total MCC install. | Platform | Notes | |----------|-------| | Steam | Most popular, separate achievements, friends list, mod workshop support. | | Microsoft Store | Cross-save with Xbox, Play Anywhere (if you own on Xbox). | | Xbox Game Pass for PC | Includes full MCC + Halo 3. Best value if you plan to play other games. |
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