Synergy – is a simple Half-Life 2 modification that allows you to experience the Half-Life 2 series and various other third-party campaigns together with friends in a cooperative setting. This mod transforms the traditional single-player experience into a cooperative adventure where teamwork and strategy are essential. Its straightforward design makes it easy to pick up, offering both classic gameplay for longtime fans and a new way to explore familiar worlds with friends. With Synergy, players can enjoy the thrill of cooperative play while reliving some of the most iconic moments from the Half-Life universe and beyond.