COD4
MW2
Ghosts
MW3
WAW
BO
COD3
BO2
1. Rundown MW2
2. Strike COD4
3. Prison Break Ghosts
4. Vacant COD4
5. Shipment COD 4
6. Summit BO
7. Standoff BO2
8. Seelow WaW
9. Upheaval WaW
10.Afghan MW2
Backlot, Crash, District, Creek, Airfield, Cliffside, Hangar, Estate, Terminal, Favela, Wasteland, Skidrow, Highrise, Trailer Park, Jungle, Firing Range, Havana, Grid, WMD, Stadium, Stockpile, Hazard, Carbon, Interchange, Dome, Mission, Resistance, Village, Meltdown, Slums, Yemen, Magma, Cove, Frost, Tremor, Freight, Warhawk, Stonehaven, Flooded.
All of these could be in the top 20.