At first, you get the sense that she is pushing you through a rat maze, but the game opens up as the player’s changing relationship with Minerva becomes the focal point. You play as a captured Combine soldier pitted against his comrades by a mysterious woman named Minerva. The entire game is a linear adventure that takes place on a tiny island, but despite its linearity, it feels like it’s happening in a real, dynamic space. The guy who made it, Adam Foster, was actually hired by Valve. Minerva Metastasis is probably the most popular and highly praised Half-Life 2 mod.