Lots of great games have been made. My favorites include:
Chrono Trigger
StarCraft
Diablo II
X-COM II
Doom
Half-Life
Thief series
Soul Reaver series
Jedi Knight series (there's nothing like using the force and slashing stormtroopers with a lightsaber!)
I'd say the most innovative game I've ever played in terms of unique gameplay was Thief. To my knowledge it was the first game to make use of sound and lighting as part of the gameplay, instead of just decoration/aesthetics. I'm not even sure if any games since then have used sound like that, or even lighting. |