** Scott [=McCulloch=], Chris Redfield's original voice actor, was the voice of Wild Dog in the ''TimeCrisis'' series as well as Richter Belmont in ''[[VideoGame/CastlevaniaSymphonyOfTheNight Castlevania: Symphony of the Night]]'' and Greg in ''VideoGame/BloodyRoar''.
** Lynn Harris, Rebecca Chambers' original voice actress, voiced Rachel and Christy in ''[[VideoGame/TimeCrisis Time Crisis 1]]'' and ''2'' respectively, Lisa Roberts in ''[=WinBack=]'', Sophitia in the original ''[[SoulSeries Soul Edge]]'', Uriko in ''[[VideoGame/BloodyRoar Bloody Roar 4]]'', and several characters in ''[[VideoGame/SkiesOfArcadia Skies of Arcadia]]''.
** Barry Gjerde, Barry's voice actor, played the lead in ''ClockTower'' and played Red in ''Mega Man X7.''
* ThrowItIn: Real Survival mode in the ''[=REmake=]''. By default, all item boxes are linked so you can get your items anywhere and there's auto aim (although this was not present in the original game). According to the description of Real Survival, the prototype of original game had it where the item boxes weren't linked at all. The game mode emulates this and manual aim for the ChallengeGamer.
* VaporWare: The Gameboy Color port was very near to completion when it was canned. Naturally, the ROM image eventually found its way to cyberspace, so even though it was never released it's still possible to play it.
* WhatCouldHaveBeen: In what would become a tradition for the series, the game had several differences from the drawing board to the beta version to the final version:
** The game was originally conceived to be played from a first person perspective.
** The infamous hallway where the zombie dogs burst through the windows had a giant spider crawling along the ceiling instead in the beta, changing the tempo of the horror considerably.
*** This player actually ran into a giant spider (or was it two?) going through that hallway after returning to the mansion when the Hunters showed up.
** There was originally going to be an African American character named Dewey who was going to be comic relief.