Vapor Trails - On Famously Unreleased Videogames
Thanks to GamePro for its article discussing formerly in-development videogames which never actually got released. Some of the more unconventional include Data East's Tattoo Assassins ("2D video-captured fighters, whose tattoos come to life and whack on other players. Characters included a Nancy Kerrigan clone and a giant running hot dog"), Sega's Virtua Hamster ("...[involving] polygonal rodents with rocket packs and skateboards swooshing through a huge hamster habitrail, collecting popcorn kernels to spit at enemies"), and Runandgun!'s partially resurrected Duelin' Firemen! ("...[an FMV] game about singing, dancing firemen [starring Rudy Ray Moore].")
...is actually available as a MAME ROM now.