What is the best game I've ever played?

So, outta every game I've played, GameCube, PC, and beyond, I'd have to say, that the best game I've ever played in a way I feel fits is Half-life. The sequel, Half-life 2, and it's episodes 1 and 2 are probably better, but I've never played. The one I've played is the original. It has amazing gameplay, and an AMAZING story. You play Gordon Freeman, a physicist in his early 20's and then something horrible happens! A resonance cascade occurs and releases aliens from another dimension into out world! So then, when all is happening, the army shows up! We're saved! Nope! They're committing a coverup! So, they kill anyone they see. Including you. THEN BLACK OPS ARRIVE AND YOU FIGHT FRIGGIN' NINJAS! Then... you fight... the leader. Nhilihilililhilianth. Then you blow up his head. In short: BADASS!