Black Mesa Sideline

Black Mesa Sideline is a short singleplayer modification for Half-Life 1. You won't need more than 20 minutes to play through this, even if you pay attention to the level design or something else.
Black Mesa Sideline is a short singleplayer modification for Half-Life 1. You won't need more than 20 minutes to play through this, even if you pay attention to the level design or something else. Theres no story, no great destination, only some enem