One of those games that is both well programmed and well made to make nuclear war just another giddy joyride.
The game focuses on a world during the late 70's and early 80's, where nuclear war is taking place, and up to 6 nations can declare into it, the nations include The European union (and several other nations not currently in the EU) The USSR, (A and some parts of Kazakhstan) Asia (Not Ocenia, Australia, or Mongolia) Lain America (Not including Cuba) Africa, and North America including Canada and the United States.
In order to win, you must get more points than your foes, you get points by killing each millions of people with your ICBMs, there are multiple modes, but I'm covering the stock mode.
The game starts at Defcon 5, you can place Radar on your territory, Nuclear Silos (Which will shoot down enemy bombers and fighters as well as launch ICBM) and finally, military air bases that can launch Bombers with nuclear capacity, and fighters.
Also during Defcon 5, you can place ships, either battleships, which focus on fighting directly at sea, Subs, which can scan the area and launch nuclear missiles (However said launch will let the rest of the players see them) and Carries, that can't fight, but can use depth charges to take out said Subs, and can also launch bombers and fighter jets. (Each jet also has some small amount of radar to let you see enemy silos and Radar)
You can only place units until Defcon 3, when battle becomes more intense, and you are allowed to send jets into enemy territory to scan for military bases and whatnot.
After getting to Defcon 1, Nuclear weapons are permitted, and can be launched by Bomber, Silo (Which will prevent the Silo from protecting against incoming jet, bomber, or ICBM.)
After you or them launch, the entire game flashes with the warning that one of the players dared to go launch nuclear missiles, and silos (Or Subs) That are launching them will be revealed to the world, and nuclear missiles will launch, but will only be seen if it's under a general radar of a team..
A nuclear missile will destroy Radar in one hit, and air bases in three, and silos in four.
A missile, hitting a city, will kill half it's living population, which is usually a a couple million each hit, depending on where you strike.
Despite a majority of the community is gone, the game is still here, unlike TF2, which is aimed at multiplayer play, this can be played with well programmed AI, of which aren't generic, and actually are quite hard at times.
The achieves, however, can't actually be attained form fighting bots, so you have to play online to actually get them, but due to a dwindling community, it's quite hard to find those players, so try to get friends to play if you want to competition against an actual person.