Black Mesa Sideline is a small Half-Life singleplayer mission. It contains 2 maps and is fully compatible with HL-Steam and HL-Won.
Black Mesa Sideline is a short singleplayer modification for Half-Life 1. You wont need more than 20 minutes to play through this, even if you pay attention to the leveldesign or something else. Theres no story, no great destination, only some enemys, different levelscenes and some scripted sequences. I hope you will enjoy it! Thx for playing it anyway ^^