The Shivah Trivia (Windows)
A similar April Fool's joke was done on 1st April 2008, when an e-mail was sent out to announce the upcoming game The Shiver:
Keelut is an honest Eskimo with a problem. Someone has been poisoning the waters, and destroying the peaceful whaling community where he lives. Step into his showshoes as you lead him across the Aleut coast to find the one responsible, and discover a shocking secret.
On 1st April 2007, Wadjet Eye Games announced a new game, The Shiva, starring Shiva the Destroyer. The following days, it was announced this was just a joke to mock the reviewers and forum posters who neglected the "H" at the end of the title, wreaking havoc with the Google searches.
After finishing the game, let the credits roll and you get access to a menu with voiceover bloopers.