Within the game's data are unused splash screens for almost every level, with the exceptions being "Neighborhood Nightmares", "Rollercoaster Boss", and "Final Boss". Of note is that the splash screen for "Bat Outta Heck" uses a placeholder graphic, featuring the screen for "Sideshow Spectacular" with "BAT Outta Heck Loading" written on top in Comic Sans. In the final game, every level uses the same generic loading screen depicting the Jimmy Neutron logo and an animation of one of the atoms from the original TV show's opening, with the only differences being the level names themselves.