The Nighttime Animals Save the World was only ever published on the web in HTML format as a playtest version. Though it was intended to be further developed and released as a PDF, that has not yet happened as of August 2009. Further, the 3rd-party host for the HTML version eventually disappeared and the file is now only available via the Wayback Machine.
This despite the fact that it has been listed among the best roleplaying games intended for very young children, and it is frequently searched for by name.
For reference, the entirety of the game as currently exists can be read at the Wayback Machine's copy.
D. Vincent Baker's introduction to TNAStW, explaining why he wrote it:
"Following in the bold footsteps of Army Ants (1st Edition), Munchkins, and SqueakQuest, drawing from much of the same source material as Tales from the Wood, with mechanics influenced by the The Valedictorian's Death and Rise Up (which isn't online yet) and probably some Shadows and maybe De Profundis, unlikely as that might seem, but also Trollbabe's influence ripples through the whole blessed hobby. Convos with Paul Czege got me thinking about danger. Plus at the Forge's birthday party, Gordon Landis said:
- "And - you know how we've got some deliciously, mind-numbingly *twisted* games here? Le Mon Mori, kpfs, Violence Future, etc. I want each of those designers to write a contrasting game.
"So. The Nighttime Animals Save the World."