The two games differ sharply:
| Feature | Halo Wars (2009, Xbox 360) | Halo Wars 2 (2017, Xbox One/PC) |
|---|---|---|
| Campaign | ✅ Offline (no Xbox Live needed) | ❌ Requires Xbox Live (sign-in, telemetry, play anywhere sync) |
| Skirmish vs AI | ✅ Offline | ❌ Requires Xbox Live |
| Multiplayer | ❌ Requires Xbox Live Gold | ❌ Requires Xbox Live Gold / Game Pass Core |
| Co-op Campaign | ❌ Requires Xbox Live Gold | ❌ Requires Xbox Live Gold / Game Pass Core |
| Leaderboards/Stats | Requires Live | Requires Live |
If you want offline RTS on console: Halo Wars (360 disc on Series X via BC) is your only Halo option. Age of Empires II: DE (PC) or They Are Billions (console) offer offline.