Playing with portals
A collaboration between DigiPen Institute of Technology students and Valve, 2007’s Portal isn’t strictly speaking a shooter, but its outlandish physics puzzles and sense of level design and scripting as a form of coercion make it feel like a critique of
Half-Life— a parallel the game’s wonderfully funny ending sequence plays up to. Based on the DigiPen game NarbacularDrop,
Portal casts you as a human lab rat armed with a gun that creates portals, lost in a shifting mechanical labyrinth run by a malicious, yet utterly inept, AI. The Portal Gun itself is every bit as fun to mess around with as Half-Life2’ s Gravity Gun but the game’s unquestioned star is your nemesis, GlaDOS, a carnival mirror image of the AI antagonists from System
Shock and Marathon.