Bone Thief: Thief of Bones: The Game

Bones for broth, for suckling soft, to cling to as you weep
Bones to see the future, to fill the missing parts, to bury deep
Bones to sing their chiming song and lull you to your sleep
Bones to rattle beneath your flesh, to hold so close and keep.

A one-page RPG where players take the role of horrible little creatures who like stealing bones. And the GM has a (water)gun.