Gettysburg: A Novel of the Civil War
The story takes place in 1863 when Robert E. Lee and the Army of Northern Virginia are victorious at the Battle of Gettysburg instead of the United States. (Instead of attacking the Union line on July 2, 1863, Lee conducts a broad turning movement and forces the Army of the Potomac to attack him in a favorable position.) Gettysburg becomes something of a footnote in the main battle, which takes place at Union Mills in Maryland. The defeat at Union Mills is a grave setback to the United States, but it by no means spells the end of the war or determines its outcome, and the United States still has a lot of fight in it.
Ultimate General
"Ultimate General: Gettysburg" was the first game of the series that allows players to lead thousands of soldiers in the Battle of Gettysburg. According to the developers, the game is unique by "Giving you the chance to be the General of either the Union or Confederate army in the battle of Gettysburg, it allows you to recreate the historical facts or try out many speculative scenarios." It first became available in Steam Early Access on 12 June 2014, and was fully released on 15 October 2014 The game has been updated many times since release, and the latest version, Patch 1.7, was released on 15 July 2016.