A masterpiece... Half-Life and Metal Gear Solid has been mentioned already. I will go with my own unique title.
Ikaruga - Masterpiecie of a level design. Shoot'em up, with a polarization mechanic, which allows you to change your shield and shot colour. This simple mechanic was pushed to its limits in terms of ingenuity. Devs also knew how players can master the game and whenever you think you mastered a particular section it surprises you with more enemies to score. Obtaining the highest rank is very challenging. A 30 minute game with infinite replay value.
A masterpiece... Half-Life and Metal Gear Solid has been mentioned already. I will go with my own unique title.
Ikaruga - Masterpiecie of a level design. Shoot'em up, with a polarization mechanic, which allows you to change your shield and shot colour. This simple mechanic was pushed to its limits in terms of ingenuity. Devs also knew how players can master the game and whenever you think you mastered a particular section it surprises you with more enemies to score. Obtaining the highest rank is very challenging. A 30 minute game with infinite replay value.