Ranking System

TierDescription
SA must-buy.
AVery good for specific aircraft or content, but not essential.
BGood if you’ve already completed content available on S and A tier terrains and want more.
CNot much content available, so you’ll need to make your own missions.
FDo not buy.

Singleplayer Tier List

TierTerrains
SSyria, Normandy (WW2)
APersian Gulf, Nevada
BKola, Channel (WW2)
CAfghanistan, Iraq, Sinai, South Atlantic
F

Syria has excellent content for practically every post-WW2 module.

Normandy is the standard WW2 terrain.

Persian Gulf has excellent campaigns for naval aircraft. Shore-based aircraft can skip it.

Nevada has excellent content for the A-10C, F-4E, and F-14 - arguably, three of the best campaigns in the game! Otherwise, it can be skipped unless you like the setting.

Kola and Channel have some good campaigns, if you’ve already played the ones on the other maps.

Multiplayer Tier List

TierTerrains
SSyria, Normandy (WW2)
APersian Gulf
B
CAfghanistan, Iraq, Kola, Nevada, Sinai
FSouth Atlantic, Channel (WW2)

Syria is the de facto standard multiplayer map.

Normandy is the standard WW2 terrain.

Persian Gulf has some interesting servers.

Afghanistan, Iraq, Sinai, Nevada and Kola are not common on public servers and are mostly used by private squadrons. Only buy the ones you need, if any.

South Atlantic is virtually unused in multiplayer.

The Channel is no longer used in multiplayer because Normandy contains the entire area of The Channel.