Half-Life 2 is a science fiction first-person shooter and the sequel to Half-Life developed and published by Valve Corporation, and released on November 16, 2004.
The game has two different engine versions to choose for speedrunning. Make sure you know the differences.
The d1_, d2_ and d3_ prefixes stand for Day 1, Day 2, and Day 3 respectively.
There is a total of 69 maps, 3 of which are either skippable or ignored in speedruns.
Half-Life 2 is a science fiction first-person shooter and the sequel to