Places where you wouldn't expect to find text adventures.

[Sslaxx]

http://www.destructoid.com/zork-also-hidden-in-call-of-duty-black-ops-186858.phtml - Zork I is hidden in the latest Call of Duty game!

[Igor Hardy]

Kind of makes sense - a person bored with the rest of Black Ops might want to have a bit of fun playing Zork.

[Dualnames]

Kind of makes sense - a person bored with the rest of Black Ops might want to have a bit of fun playing Zork.

Ahaha, yes I guess so. Also great easter egg. I'm very happy that easter eggs are wayyyy more mainstream now and developers even plan them out as part of the game, due to the whole achievements scheme.