The ones I'm familiar with
COOP mode: I'm familiar with it, so I won't go into detail
TDM mode: It's similar to the CS mode, where the two sides are killed by each other
Domination: It's a large-scale co-op mission that includes the types of missions such as capturing, defending, demolishing, capturing, rescuing, stealing, destroying, and so on. You can cooperate with your teammates in the siege, you can also do non-mainline tasks of the branch line, the main line (siege) and branch line tasks are rewarded after the success of the mission, this large-scale task requires more than one team to cooperate with each other, to have an assault team, the support team, the logistics team, and other concerted efforts in order to play the stimulation, to play the smooth. I'm now mainly online is the armed assault 3 Domination, with the foreigners to play together (not seen a few domestic Dom service)
CTI mode: This is a combination of FPS and RTS game mode, can be played like a normal FPS, kill the enemy will be rewarded by the money, and the money can buy weapons to buy ammo, but also can recruit AI soldiers to join your squad. You can also recruit AI soldiers to join your squad. In addition, you can build tank factories and helicopter factories like in RTS, and you can buy all kinds of tanks or helicopters with your money. The game ends with one side wiping out all the enemy forces on the map (my CTI experience with Armed Assault 2)
And then there's DAYZ, the zombie survival mode, which is currently very hot
And then there's DAYZ, the zombie survival mode.