There were a lot of them... Some we sadly won't remember/know. For example, who made the first RTS game and what was its name? I'm pretty sure there was something before the original Dune...

Wolf3d, for inventing the FPS genre... Half-Life, for its revamped Q2 graphics engine and innovative gameplay/storyline...

There are probably more... I don't think you could say that one game did it all... A lot of different games made the gaming world a better place for us to be (live?) in.

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