Dragon Age: Origins

Dragon Age: Origins is an RPG by Bioware. Join forces with a manbaby knight, a high-functioning autistic witch, a spicy Latin elven guy, and a host of other freaks in order to stop Sauron's horde the Darkspawn! It was designed to be a lot like classic CRPGs like Baldur's Gate, but they seem to be abandoning this for the hilariously awful-looking sequel, Dragon Age 2.

Blood Mage conversation
Text and voice for an unused confrontation from Wynne about the player using Blood Magic after killing Uldred exist in the game's files, but are never used in the main game. They can be reactivated via mods, but the conversation sets a few plot flags that may cause problems in the expansion pack, Awakenings.

Taint status
A status for being tainted (having Darkspawn blood on you) exists, but there seems to be no way to reactivate it and there are no healing items associated with it.

Shale
Originally, Shale was supposed to be recruitable without any DLC. It was supposed to take place in Redcliffe Village. The actual process to recruit Shale is not known, but it involved a cottage named “Wilhelm's Cottage” (which is actually the cottage to the right when the player enters the Village from the world map), a note in the cottage, a note in the abandoned General Store, and a Golem Control Rod in the tavern.

The cottage can only be accessed on the PC version via console commands, and when entered it contains a note named “Circle Note”, which is an early version of the “A Decades-Old Letter” note, which is actually used to help recruit Shale in the final version. Reading this letter spawns a letter called “Note of Sale” in the abandoned General Store, which states that there is a Golem Control Rod in the Tavern. After reading the note, a conversation with the Tavern owner, Lloyd, can be accessed, which completing will activate a previously-inactive barrel, which contains a special Golem Control Rod named “Lloyd's Control Rod”. Nothing else can be done after obtaining the rod, as there is no Shale to activate.

Jowan Quest
A fully-functioning quest to resolve Jowan's storyline if the player let him go at Redcliffe exists and can be started, but there is no way to complete it under normal circumstances because of a bug.

The unused parts of the quest involves going to a spot marked on the map that is named “Jowan”. There, you will find him rescuing a few people from Darkspawn. When the enemies are dead, the player can either let him go or waste him. No matter the conclusion, the quest ends and the player can receive their reward.