I had absolutely no idea Blizzard made a Warcraft adventure game called Warcraft Adventures: Lord of the Clans. Then again, it is 18 years old - and it was never released.
Thanks to someone from Russia, though, via Kotaku, you can now download and play Warcraft Adventures: Lord of the Clans for yourself. Goodness knows how or why or when this person got their hands on the game but they have and it works - I've tried it myself.
In the game you are Thrall and you begin locked in a dungeon, awaiting execution. Obviously you mustn't let that happen and must escape. But how? You can use your mouse cursor to find things to to interact with, either looking at them, eating them or touching/picking them up. Classic point-and-click stuff.
What's immediately apparent is how complete the game looks and feels - it even has voice acting by Clancy Brown (The Kurgan in Highlander) and Peter Cullen (the voice of Optimus Prime from Transformers). That's because Warcraft Adventures: Lord of the Clans was almost completed.
Kotaku delved into the story of Warcraft Adventures: Lord of the Clans in 2011. Here was a game announced for a late 1997 release but would never see the light of day because, during the process for development, Monkey Island 3 and Grim Fandango shifted the adventure goal-posts. Blizzard delayed in order to try and improve what it had but, for a number of reasons, eventually conceded in May 1998 that it wouldn't have the best game out there. And therefore Warcraft Adventures was never released.
For reference: Warcraft 1 came out in 1994, Warcraft 2 in 1995, and Warcraft 2 expansion Beyond the Dark Portal in 1996. The third Warcraft game didn't arrive until 2002, though there was a Battle.net edition of Warcraft 2 in 1999.