This is a list of SCPs that were either removed from the game or were planned to be added but were cancelled.
SCP-650, or the "Startling Statue", is a black colored humanoid statue with no facial features. It is completely smooth and its default position is facing skyward with arms stretched out. If it is not being observed, the statue has the potential to relocate itself directly behind the person who viewed in a threatening pose, causing a "fight-or-flight" response in subjects.
SCP-650 was proposed by a user on the SCP - Containment Breach forums. After reading the proposal, Regalis considered adding it into the game if a model was made due to the fact that it could be easily implemented. Progress for the project became very slow and eventually fell apart altogether due to overall lack of morale from fellow members of the community. Inevitably, all progress came to a halt and no attempts have been made to finish the model. The project is thus presumed cancelled.
SCP-650 is very similar to SCP-173 in terms of description. Notably, that it is a statue, as well as the fact that it moves somewhere else when not observed. However, it is only meant to be a jump-scare and blinking won't cause it to move.
Although, not in the first SCP:CB, it was added in SCP:CB Unity edition.
SCP-689 is an SCP object known as "Haunter in the Dark" to the Foundation wiki. Specifically, it is a small, green soapstone statue. It is completely inert for as long as it is being watched by at least one human being. Normal behaviors such as blinking do not appear to interrupt the "watching" for this purpose, but any lapse in attention, however momentary, renders the observer vulnerable. As soon as SCP-689 is unobserved it vanishes from its current location. Within 15–20 seconds one person who has previously viewed SCP-689 dies instantaneously, SCP-689 reappearing on top of their remains. If no previous viewers are presently alive, it reappears in the same place as previous.
A model and containment room was created for SCP-689 in the hope of better utilizing the eye mechanics in the game. It was intended that whenever the player made eye contact with SCP-689, they would have to maintain it. Should they take their eyes off SCP-689, it would instantly kill them. Regalis (while in favor of better use of the eye mechanics) deemed SCP-689 too "powerful and over-the-top", and decided on not including the SCP in the game.
The room model, SCP-689 model, and two bare-bones textures could be found within the files of the game in v0.1.1-v0.5.5 prior to their removal.
SCP-689's nickname, "Haunter in the Dark", is a reference to the story of the same name by the late science-fiction/horror author H.P. Lovecraft.