In terms of appearance, the Oblivion pill is colored completely black.
It is alluded that Sally gave Ollie Oblivion to scramble his memories and have him forget everything he had done, this eventually made him go crazy. During one of Sally's side quests with Benedick Keyes, he begs her to give him the recipe for Oblivion, as he desperately wants to forget everything about his lover, Beatrice Gates.
It is unknown what Oblivion is made out of.
The drug is shown to Arthur by Constable Peters at the very end of the game, giving the player the same choices from the very beginning: Remember or Forget. Choosing to remember makes arthur reject the offer and continue to live with the actions he had made in the past, choosing to forget however causes him to forget everything that he had been building up to in Act I and head back to Wellington Wells.
- Oblivion means to be in a state of being unaware or unconscious of what is happening.
- There are multiple kinds of drugs in real life that are capable to inducine amnesia in the user.
- The name is derived from the latin verb "obliviscor", meaning "I forget".