Easily the greatest war game for the PC ever created.
Here you have it: Sid Meier's Gettysburg.
This game is what I consider one of the best games ever created for the PC. Simply, because it offers one of the most addicting and interesting experiences one can ever have.
As your cavalry under Buford hold off Heth's division, Reynolds' corps from the South moves North. But wait! To the North, the Confederates are moving through the woods! Suddenly, things don't look so easy, as you have to carefully balance your soldier strength. Slowly, the Confederates push you back, until you bring up your reinforcements and put up a fight.
I've actually played a game for over six hours straight - and how can you not? With the excitement of controlling your troops like this, countering your opponent and defending "Victory Points" throughout the map, it's understandable how this game is just 'that addicting'.
I have no problem admitting that I'd rather play this game instead of one of the classic Command & Conquer games. The idea of being able to re-write history normally sounds dull, but this game made it fun.
This is by far one of the best games I have ever played in all my life, and I stick with it.