yo_john117 on 17 October 2011
| Week | Halo 3: ODST | Halo: CEA | Net Difference |
| 11 | -- | 18,654/185,178 | -- |
| 10 | -- | 15,966/201,144 | -- |
| 9 | -- | 21,041/222,185 | -- |
| 8 | -- | 37,234/259,419 | -- |
| 7 | -- | 53,530/312,949 | -- |
| 6 | -- | 29,228/342,117 | -- |
| 5 | 400,944/400,944* | 29,462/371,639 | -371,482*/-29,305 |
| 4 | 47,793/448,737 | ||
| 3 | 83,191/531,928 | ||
| 2 | 110,957/642,885 | ||
| 1 | 111,014/753,899 | |
Halo CEA pre-orders are quite lame.
