SWAT2 is turn-free and made totally for action. Here's how the game is played. First you choose to be either a SWAT team or a group of terrorists. Each side has 15 missions. Before going off on each mission you view a short video about it.
Some missions are in the desert, some in the city.
You can also set up your own missions with a map constructor. This is an awesome way to design the ultimate battleground. Whichever you chooses, you still have to clothe your officers and terrorists before each mission. If you are a terrorist you can cause riots, commit random acts of destruction, or just take multiple hostages. If you are a SWAT officer, you can calm riots, stop bank robbers and save lots of hostages.