Research and Development is a puzzle-centric mod for Half-Life 2: Episode Two featuring an unarmed player but plenty of violent mayhem.

Jaer says

10/10 - Agree Disagree

One of the coolest mod ever. Greates puzzle game. True game. An expecptional work. Mbortolino also made mod "Water". What can i say? A really gifted person, true talant.