The Holy Hand Grenade is a ranged explosive weapon famously featured in the Worms
series of games. When activated, a chorus of "Hallelujah!" rings over the battlefield then causes a massive explosion.
The origins of the Holy Hand Grenade can be traced back to the film Monty Python and the Holy Grail, a comedy chronicling King Arthur's quest to retrieve the Holy Grail. Incidentally, this film was subsequently turned into a game
In the film, King Arthur and his accompanying Knights use the Holy Hand Grenade of Antioch in order to vanquish the killer rabbit guarding the entrance to the Cave of Caerbannog. The film introduces various pieces of trivia associated with the Holy Hand Grenade, such as the fact that it will only detonate after a count of three has been reached (this rule was later adhered to by the Worms games, which bestow an unchangeable three-second fuse upon the weapon).