Play Half-Life with friends! Players fight computer-controlled monsters through the original Half-Life storyline or hundreds of available co-operative scenarios. Also includes a plethora of new weapons, enemies, visuals and gameplay systems. Customization features allow each map to use its own unique weapons and enemies.
For those who prefer the older Pre-Standalone version menu and music, extract to your Sven Co-op folder and overwrite files if asked to install.