CarnEvil

Unused Graphics
Several unused screens are present within the game. These include screens from a promotional sneak preview of the game, developer group photos, unused AAMA ratings, enemy name plates, stage select placeholders, unused "Game Over" screen, and even a malicious picture featuring Jeffrey Dahmer and Neil Nicastro.

Stage Select Placeholders
There are quite a few variations of stage select graphics for every stage in the game, throughout different points in development. Some of these preliminary graphics reflect early names for levels, such as: "Freakshow Chamber of Horrors", "The Haunted House" and "Mr Rickety". All stage select placeholders were downsized and converted to be in the shape of carnival tickets in the final release of the game. This was most likely done to allow preview animations (usually of what was present in these early graphics) to play atop each stage placeholder.

Freak Show
Apparently, the full name for the level is "Freakshow Chamber of Horrors," based on the earliest graphic found. Later variations of the graphic would shorten this to "The Freak Show", and finally just "Freak Show," most likely due to limited canvas space to work with as the game's stage select layout evolved.

Haunted House
Variations of this graphic seem to alternate between calling this level "The Haunted House and "Haunted House". Again, the level's name was most likely shortened due to limited canvas space to work with as the game's stage select layout evolved.

Rickety Town
Apparently, the original name for the level was "Mr. Rickety, " based on the earliest graphic found, which oddly enough uses an image of anime character Sailor Jupiter as its background. The stage was eventually renamed to "Rickety Town" at some point later in development, most likely to make it sound more like a place than a person.

The Big Top
The "under construction" graphic was most likely used during the sneak preview, and was probably not selectable. The final game contains no stage select graphic for "The Big Top" level, as the player is automatically taken there after completing the previous three levels. It is assumed that at this point in development, the level has not been fully completed.

Game Over
An alternate version of the "Game Over" screen exists featuring Umlaut, the jester, instead of Professor Ludwig von Tökkentäkker. It is unknown why the change was made, but it was most likely due to Professor Ludwig von Tökkentäkker being the final boss of the game.

Oddities
A strange image was found of Jeffrey Dahmer holding a bloody bag with Neil Nicastro's head in it. The image appears several times in various sizes, and was most likely used for padding. Seems Neil Nicastro (executive producer of the game, and CEO of Midway Games until 2004) was on someone's naughty list...